3M Occupational Health and Environmental Safety Division2009 Respirator Selection Guide
Respirator Selection Criteria .1
Table of Contents
Format Explanation .3
Respirator Filter Definitions .9
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How to Use This Guide .11Chemical Compound Guide .153M™ Health and Safety Software Library .99
Respirator Codes and Descriptions . inside back cover
Respirator Selection Criteria
The 3M™ Respirator Selection Guide
Supplied Air Respirators (airline)
includes a list of chemicals for which
The OSHA Respiratory Protection
s #ONTINUOUS &LOW
3M respirators can be recommended.
Standard (29 CFR 1910.134) requires
–Loose-fitting facepiece
This information can be used to
fit testing for all tight-fitting respirators.
(e.g., L-501) .25
supplement general industrial hygiene
Whether you select a maintenance-free
–Half facepiece .50
knowledge. Once workplace contaminants
or a reusable respirator, the wearer must
–Full facepiece, helmet,
and their concentrations have been
obtain a satisfactory fit as indicated by a
identified, the guide can be used to help
qualitative or quantitative fit test. Worker
s 0RESSURE $EMAND WITH
select an appropriate 3M™ Respirator for
comfort must also be considered. Removal
Full facepiece .1000
nearly 700 chemicals with Threshold Limit
of the respirator, even for short periods of
Pressure Demand Airline with Escape
Values (TLVs®) or other recommended
time, dramatically reduces the protection
SCBA .10,000,
exposure limits.
afforded by the respirator.
unknown and IDLH atmospheres
Because actual conditions vary from one
Pressure Demand SCBA .10,000,
worksite to another, this information is
Protection Factors
unknown and IDLH atmospheres
intended only as a guide. Selection of the
The respirator selected must have an
most appropriate respirator will depend
assigned protection factor adequate for
Effects From Skin or Eye
on the particular situation and should be
the particular workplace exposure.
made only by a person familiar with the
Divide the air contaminant concentration
If a chemical can be absorbed through
working conditions and with the benefits
by the occupational exposure limit (OEL)
the skin, skin protection may be required
and limitations of respiratory protection
to obtain a hazard ratio. Then select a
in addition to respiratory protection. Eye
products. If you have any questions
respirator with an assigned protection
protection may also be necessary if not
related to proper selection and use of
factor greater than or equal to that
hazard ratio.
provided by the respirator. Failure to
provide adequate skin or eye protection
can invalidate established exposure limits
3M respirators, or the use of this guide,
Hazard Ratio
and make respirator use ineffective for
contact your local 3M OH&ESD
protection against certain workplace
representative or call our 3M OH&ESD
Airborne Contaminant Concentration
Technical Service Line at 1-800-243-4630.
Respirator Program
Assigned protection factors* currently
Consider the entire package of safety
recommended by 3M are as follows:
equipment required for the job. The
respirator selected must be compatible
Where respirators are in use in the
Air Purifying Respirators
with hard hats, goggles, glasses, welding
workplace, a formal respiratory protection
s (ALF FACEPIECE MAINTENANCEFREE AND
hoods, faceshields, etc. In addition, the
program must be established covering
dual cartridge) .10
worker must be able to communicate
the basic requirements outlined in the
s &ULL FACEPIECE .50
and perform required job duties without
OSHA Respiratory Protection Standard
Powered Air Purifying Respirators
removing the respirator. If strenuous work
(29 CFR 1910.134). Education and
s ,OOSEFITTING FACEPIECE EG ,
is to be performed, or if the respirator is
training must be properly emphasized
Airstream™) .25
to be worn for an extended period of time,
and conducted periodically. Maintenance,
s (ALF FACEPIECE .50
it may be desirable to select a lightweight
cleaning, and storage programs must be
s &ULL FACEPIECE HELMET
respirator with low breathing resistance.
established and routinely followed for
If a respirator does not have good worker
acceptance and does not stay on the
worker's face, it will not provide the
protection needed.
* Assigned protection factors may vary for specific standards as pro mul gat ed by OSHA (e.g., continuous flow supplied air respirators are assigned a
protection factor of 100 in the OSHA Asbestos Standards, 29 CFR 1910.1001 and 29 CFR 1926.1101). Where assigned protection factors in local,
state, or federal standards are lower than those listed here, they should be used instead. For additional limitations of 3M respiratory protection
products, refer to 3M respirator packaging and use instructions and limitations.
Respirator Selection Cri te ria
Location Of Hazardous Area
Use these respirators only for those
When specifying supplied air respirators,
specific chemical compounds for
consider the distance the worker must
which they have been approved or
travel to get to an uncontaminated work
area, as well as obstacles or equipment
present in the area. If ladders or scaffolds
These respirators help protect
General Use Instructions
must be climbed, an air purifying respirator
against airborne particles or gases
or a combination air purifying/airline
s &AILURE TO FOLLOW ALL INSTRUCTIONS AND
and vapors only. Many of these
respirator may be appropriate.
limitations on the use of these respirators
substances can cause serious
and/or failure to wear them during all
health effects, including sickness or
Respirator Characteristics,
times of exposure can reduce respirator
death. Misuse of a respirator may
Capabilities, and Limitations
effectiveness and may result in sickness
result in sickness or death. For
proper use, see a supervisor, refer
A respirator may not be able to help protect s -ANY OF THE CONTAMINANTS THAT CAN BE
to the respirator package, or call
against all of the contaminants present in
dangerous to a person's health include
3M OH&ESD Technical Service at
a particular work environment. Specific
the ones that are so small they cannot be
limitations are stated on the approval labels
seen or smelled at dangerous levels.
and are included with use instructions
s "EFORE USE OF ANY RESPIRATOR THE WEARER
and limitations. These must be carefully
must first be trained by the employer in
Format Explanation
reviewed for each respirator before use.
proper respirator use in accordance with
General precautionary information is given
applicable safety and health standards.
below. Refer to respirator packaging or
Chemical names listed in this guide are
s 4HE /3(! 2ESPIRATORY 0ROTECTION
operating manuals for specific information.
generally those used in the Threshold Limit
Standard [29 CFR 1910.134(f)(1)]
Values and Biological Exposure Indices for
requires that the wearer of any tight-
2008 published by the American
fitting respirator be fit tested.
s ,EAVE THE CONTAMINATED AREA IMMEDIATELY
Conference of Governmental Industrial
if dizziness or other distress occurs, if the
Hygienists (ACGIH). Pesticides and
respirator becomes damaged or breathing
chemicals without established occupational
WARNING becomes difficult, if contaminants can be exposure limits are not included. Call 3M
No respirator is capable of
smelled or tasted, or if irritation occurs.
OH&ESD Technical Service for assistance
preventing all airborne
in selecting respirators for these chemicals.
contaminants from entering
General Use Limitations
the wearer's breathing zone.
s These respirators do not supply oxygen.
Respirators help protect against
s $O NOT USE WHEN CONCENTRATIONS OF
This is the concentration considered
certain airborne contaminants by
contaminants are immediately dangerous
Immediately Dangerous to Life or Health
reducing airborne contaminant
to life or health, when concentrations are
(IDLH), as published by the National
concentrations in the breathing
unknown, or in atmospheres containing
Institute for Occupational Safety and
zone to below the TLV or other
less than 19.5% oxygen, unless using an
Health (NIOSH) (DHHS [NIOSH]
recommended exposure level.
SCBA or combination airline/SCBA.
Publication No. 90-117). It specifically
Misuse of respirators may
s $O NOT ABUSE OR MISUSE ANY RESPIRATOR
refers to the acute respiratory exposure
result in overexposure to the
s $O NOT USE TIGHTFITTING RESPIRATORS OR
that poses an immediate threat of loss of
contaminant and cause sickness
loose-fitting facepieces with beards or
life, immediate or delayed irreversible
or death. For this reason, proper
other facial hair or conditions that prevent
adverse effects on health, or acute eye
respirator selection, training, use,
direct contact between the face and the
exposure that would prevent escape from a
and maintenance are mandatory
edge of the respirator.
hazardous atmosphere. The reasons NIOSH
in order for the wearer to be
s $O NOT USE WHEN CONCENTRATIONS EXCEED
established an IDLH at a particular level
properly protected.
maximum use concentrations established
for a specific chemical are described in
by regulatory agencies.
Documentation for Immediately Dangerous
to Life or Health Concentrations (IDLHs),
NTIS Publication No. PB-94-195047,
Format Explanation
May 1994. The 1994 IDLH values
A few odor thresholds published in other
s 4HE 7ORKPLACE %NVIRONMENTAL
established by NIOSH used interim
documents were used when not listed in
Exposure Levels (WEEL) from the
criteria, and OSHA stated in a May 21,
the references below (e.g., AIHA WEEL
American Industrial Hygiene Association
1996 memorandum that OSHA will use the documentation). The method of defining
is listed when it is the most stringent
older IDLH values while NIOSH conducts
and determining odor thresholds varies
value or there is no TLV or PEL.
further study regarding the 1994 values.
widely, thereby giving rise to a significant
s 4HE OCCUPATIONAL EXPOSURE LIMITS REFER
The 1990 IDLH values are used in this
range of reported odor thresholds for many
to Time Weighted Average (TWA)
guide since OSHA uses these values for
substances. In dividuals may also respond
concentrations for a normal eight (8) hour
enforcement. For those substances with no
differently to the same odor. At a given
workday and a forty (40) hour workweek,
IDLH listed, the manufacturer or supplier
concentration, one person may smell and
unless referenced as a ceiling or STEL.
may have additional chemical information.
recognize the odor, while another person
s Ceiling OELs refer to concentrations that
The Chemical Referral Center operated
may barely notice it. The odor thresholds
should not be exceeded during any part of
by the Chemical Manufacturers Asso-
reported in the literature are typically
the working exposure.
ciation can assist in providing telephone
determined for a single constituent, with
s Short-Term Exposure Limit (STEL)
numbers for obtaining information from
no other chemicals present in the air. The
is a 15-minute time weighted average
manufacturers. The lower explosive level
single constituent situation rarely occurs
exposure which should not be exceeded at
(LEL) and the concentration that would
in the workplace. Therefore, caution must
any time during a workday.
result in an oxygen deficient atmosphere
be exercised in using these numbers. They
s Skin notations indicate the substance can
should also be considered to be IDLH.
may not be representative of odor detection
be absorbed through the skin. In these
capabilities of individual workers in your
cases, appropriate measures must be taken
facilities. On the other hand, experience
to prevent skin and eye contact to avoid
Odor thresholds can no longer be used as
may indicate better warning properties than
invalidating the OEL.
the primary indicator for changing gas and
what is indicated by the reported value.
s &OR A MORE DETAILED EXPLANATION OF 4,6S
vapor cartridges as a result of the revised
and their proper application, refer to the
OSHA standard, 29 CFR 1910.134. The
TLV booklet available for a nominal fee
respirator program administrator, using
from ACGIH, 1330 Kemper Meadow
Drive, Cincinnati, OH 45240.
objective data and information, must
now establish chemical cartridge change
s 4HE OCCUPATIONAL EXPOSURE LIMITS LISTED
Several common synonyms are listed in
schedules. The established change schedule
are 2008 ACGIH Threshold Limit
this column.
should result in replacing the cartridges
Values (TLVs), unless otherwise stated.
with new ones before their service life
The concentrations are expressed in
Respirator Rec om men da tions
is depleted under the conditions of that
ppm — parts per million (parts of
workplace. Reported odor thresholds will
contaminant per million parts of air)
This column lists the 3M recommend ed
continue to be listed in the guide because
— unless specifically stated as mg/m3
respirator for exposure levels not exceeding
odor can be useful as a secondary or
(milligrams of contaminant per cubic
ten times (10X) the OEL. Do not exceed
backup indicator for cartridge change-out.
meter of air) or some other unit.
maximum use concentrations established
The primary references for odor thresholds
INDICATES THAT THE 4,6 IS
by regulatory agencies. When a chemical
were VOCBASE and an American
lower than the PEL.
cartridge respirator is recommended
Industrial Hygiene Association (AIHA)
s 4HE /3(! Permissible Exposure Limit (e.g., OV) it can only be used if a cartridge
publication. When an odor threshold value
(PEL) is listed when it is more stringent
change schedule is established as described
was not published in either of these two
than the current TLV.
in 29 CFR 1910.134 (d)(3)(iii) (B)(2). If a
sources, the other references were used. *Odor Threshold References
4. Fazzuluri, F.A. Compilation of Odor and Taste
9. Gemert, L.J. Van and A.H. Nettenbreijer.
1. Jensen, B., and P. Wolkoff. VOCBASE: Odor
Threshold Values Data. American Society for
Compilation of Odor Threshold Values in Air and
Thresholds, Mucous Membrane Irritation
Testing and Materials (1978).
Water. CIVO-TNO, Netherlands (1977).
Thresholds and Physio-Chemical Parameters
5. Verschueren, K. Handbook of Environmental Data
10. Gemert, L.J. Van. Compilation of Odor Threshold
of Volatile Organic Compounds. [Computer
on Organic Chemicals. pp. 12-21. Van Nostrand
Values in Air, Supplement IV, CIVO-TNO, Zeist,
Software]. National Institute of Occupational
Reinhold, NY (1977).
Netherlands (1982).
Health, Denmark, 1996.
6. Warning Properties of Industrial Chemicals—
11. Workplace Environmental Exposure Levels,
2. Odor Thresholds for Chemicals with Established
Occupational Health Resource Center, Oregon
American Industrial Hygiene Association (2008).
Occupational Health Standards. American
Lung Association.
12. Ruth, J.H. Odor Thresholds and Irritation Levels of
Industrial Hygiene Association (1989).
7. Electrical Safety Practices, ISA Monograph #113
Several Chemical Substances: A Review. Am. Ind.
3. Amoore, J.E. and E. Hautula. Odor as an Aid to
Hyg. Assoc. J. 47(3):A-142-A-151 (1986).
Chemical Safety. J. Appl. Toxicol.
8. Documentation of TLVs and BEIs. American
Conference of Governmental Industrial
Hygienists. 7th edition (2008).
change schedule is not established, an
NIOSH approved for specific substances
airline respirator must be used. The SA
Other information may be listed in this
and/or conditions.
code indicates that chemical cartridge
C. References to warning refer to odor
respirators should not be used. Generally
or irritation warning properties of the
this is because of one of the three reasons
A. Short service life means predicted
substances. Where listed as unknown,
described in the Comments column. These
cartridge life of less than 30 minutes at
no literature reference was located.
recommendations are valid only if the
concentrations of ten times (10X)
Where listed as questionable, a wide
respirator selection process outlined on
the OEL. Actual service life will
range of reported odor thresholds
pages 11-14 is followed. The abbreviations
vary considerably, depending on
exists. Air purifying respirators may be
used are explained in the Respirator
concentration levels, temperature,
acceptable for these substances if you
Identification Key in the back pocket
humidity, work rate, etc. See the
follow the requirements for establishing
insert. All of these respirators have not
following literature references for
a change schedule acceptable to OSHA.
been specifically tested against each
specific details on the conditions and
D. These compounds have been identified
compound listed. A review of chemical and
limitations of these estimates:
as possibly existing in both particulate
physical prop erties of the materials, as well
1. 3M Company. 3M Respirator
and vapor phase by a method published
as adsorption or filtration characteristics
Service Life. [Computer Software]
by Perez and Soderholm. For these
of the respirators, forms the basis for the
3M OH&ESD, www.3M.com/
compounds, 3M recommends that a
recommendations. The recommendations
gas/vapor cartridge be used in addition
are for single substances. When two or
2. Smoot, D.M. Organic Vapor
to the traditionally accepted particulate
more substances are present, a combination
Respirator Service Life Prediction.
filter. It is the user's responsibility to
respirator may be appropriate. For
Prepared Under NIOSH Contract
determine whether both forms coexist.
example, with a spray paint that contains
No. 210-76-0108. Published
Both chemical properties and use
organic solvents and titanium dioxide, a
October 1977.
conditions/processes can affect the
respirator con sist ing of an organic vapor
3. Nelson, G.O. and C.A. Harder.
physical form in the workplace. Users
cartridge and a filter may be appropriate.
Respirator Cartridge Efficiency
should consider specific exposure data
In cases where an air purifying respirator
Studies: V. Effect of Solvent Vapor.
and workplace conditions before making
is not available for all of the substances
Am. Ind. Hyg. Assoc. J. 35(7):
their final selection. If a chemical
of concern in a mixture, a supplied air
391-410 (1974).
cartridge is used, a change schedule
respirator may be required. In some cases,
Typically, an airline respirator is
must be established to replace the
the respirator is preceded by an "(F)"
recommended because the service life
cartridges before the end of their service
designation. The Identification Key lists
may be so short that the frequency
these respirators as full facepiece air
required for changing the cartridges
E. These compounds have been identified
purifying respirators. For concentrations
may not be practical.
as possibly existing in both vapor and
not exceeding ten times (10X) the OEL,
particulate phase in the workplace by
half facepiece respirators (maintenance-
References to Ineffective sorbents or
Perez and Soderholm. Even though these
free or reusable) with equivalent
Unknown sorbent effectiveness
chemicals would be expected to be in
filters or cartridges may be suitable if
indicate 3M does not make chemical
the vapor phase, when other aerosols
appropriate eye protection is provided.
cartridge respirators appropriate for
are present or there is high humidity,
these substances at this time or it is
it is possible that the vapor may be
For concentrations greater than ten times
not known how effective the sorbents
adsorbed onto these coexisting particles
(10X) the OEL, follow the pro tec tion fact
would be for these materials. 3M does
or dissolved in available water droplets;
or guidelines in specific OSHA standards,
not recommend using a chemical
therefore, 3M recommends a filter for
or refer to the instructions in the Respirator
cartridge respirator or attempting to
the particulate phase be used in addition
and How To Use This
establish a change schedule for these
to the traditionally accepted chemical
sections of this guide.
cartridge. It is the user's responsibility
B. References to a respirator not being
to determine whether both forms
specifically approved refer to approvals
coexist. Both chemical properties and
for that particular substance only. All
use conditions/processes can affect the
respirators listed in this guide are
physical form in the workplace. Users
* See Perez, C. and S. C. Soderholm: Some Chemicals Requiring Special Consideration When Deciding Whether to Sample the Particle, Vapor, or Both
Phases of an Atmosphere. Appl. Occup. Hyg. 6(10): 859-864 (1991).
should consider specific exposure
Respirator Filter
contain only oil aerosols, unless the filter
data and workplace conditions before
needs to be changed for hygiene reasons,
making their final selection.*
is damaged, or becomes difficult to breathe
F. It is believed that an N-series filter is
3M 42 CFR 84 Filters
through before the time limit is reached.
sufficient since these materials will not
N-Series Filters: These filters are
When used in atmospheres containing
coat the filter fibers, but since this
restricted to use in those atmospheres free
non-oil aerosol, 3M P-series filters should
material may contain oil aerosols, an
of oil aero sols. They may be used for any
be used and reused subject to conditions
R- or P-series filter is recommended
solid or liquid airborne particulate hazard
of hygiene, damage and increased
until further research or a regulatory
that does not contain oil. Generally these
agency takes a specific position.
filters should be used and reused subject
P95 Particulate Filter -At least
G. R- or P-series filters have been
only to con sid er ations of hygiene, dam age,
95% filter efficient when tested with
recommended pending more research
and increased breathing resistance.
0.3 µm DOP (Dioctyl Phthalate) aerosol.
as to how these materials affect the
3M makes replaceable filters and filtering
filter fibers.
N95 Particulate Filter -At least 95%
facepiece respirators in this category.
H. Listing of 3M 3510, 3530, 3550, or
filter efficient when tested with 0.3 µm
3720 refers to a 3M™ Personal Air
NaCl aerosol. 3M has re place able filters
P100 Particulate Filter -At least
Monitor which may be used to measure
and filtering facepiece respirators in
99.97% filter efficient when tested with
the amount of contaminant in the air.
this category.
0.3 µm DOP (Dioctyl Phthalate) aerosol.
Monitors may also be used to sample
3M makes re place able filters and filtering
N100 Particulate Filter -At least
for other materials with analysis
facepieces in this category.
99.97% filter efficient when tested with
performed by a private laboratory.
0.3 µm NaCl aerosol. 3M has a filtering
Oil: Any of numerous mineral, vegetable and synthetic
You should check with the laboratory
facepiece respirator in this category.
substances and animal and vegetable fats that are
to determine what other chemicals can
generally slippery, com bus ti ble, viscous, liquid or
be measured with the monitors.
R-Series Filters: A filter intended for
liquefiable at room tem per a tures, soluble in various
organic solvents such as ether but not in water.
removal of any particle including oil-based
An estimate of the airborne
liquid aerosol. They may be used for any
concentration is needed for making
solid or liquid airborne particulate hazard.
appropriate respirator selection and
If the atmosphere contains oil, the R-series
establishing a cartridge change schedule.
filter should be used only for a single
Contact the toll free 3M OH&ESD
shift (or for 8 hours of continuous or
Technical Service Line at 1-800-243-4630
intermittent use).
if you have questions about the use of this
guide or the proper selection and use and
R95 Particulate Filter -At least
lim i ta tions of any 3M respirators.
95% filter efficient when tested with
0.3 µm DOP (Dioctyl Phthalate) aerosol.
3M makes filtering facepiece respirators
in this category.
P-Series Filters: A filter intended for
removal of any particle including oil-
based liquid aerosols. They may be used
for any solid or liquid particulate airborne
hazard. NIOSH requires that respirator
manufacturers establish time-use limitations
for all P-series filters. 3M recommends that
P-series filters should be used and reused
for no more than 40 hours of use or 30 days,
whichever occurs first, in atmospheres that
* See Perez, C. and S. C. Soderholm: Some Chemicals Requiring Special Consideration When Deciding Whether to Sample the Particle, Vapor, or Both
Phases of an Atmosphere. Appl. Occup. Hyg. 6(10): 859-864 (1991).
Respirator Filter Definitions
How to Use This Guide
If a respirator is being selected for a single
step. Consider particulate contaminants
To determine what type of PAPRs are
compound listed in this guide with an air
oil if unknown or not sure. List the
available, check the Respirator Identification
concentration not exceeding 10 times the
contaminants on the form contained in this
Key. If a PAPR is selected, use a HEPA
value in the TLV column, then the respirator
guide or on your own form. Go to Step 2.
filter if an N, R, or P-series filter is listed.
identified in the Respirator Recommended
2. Determine the air concentration of the
If the guide lists SA or SA(F) even though
column may be selected. If a particulate filter
contaminant. Air sampling is
the hazard ratio is less than or equal to 10,
respirator is recommended (any respirator code
recommended. Consideration should
an SA(F) must be used. A PAPR cannot
with N95, N100, R95, P95 or P100 in it) and
be given to TWA, short term and peak
be used. For example: For an exposure to
a mineral, vegetable or synthetic oil or other
(ceiling) exposures, while keeping in mind
vinyl toluene with a hazard ratio of 90, an
oily material is also present in the air, you
seasonal and worker variability and the
SA(F) or (F)PAPR/OV must be selected.
must select a respirator that provides the same
specific process being used. If air sampling
The (F)PAPR/OV is acceptable because
efficiency but is acceptable for oil aerosols
data are not available and sampling is
the OV cartridge is listed in the Respirator
(see Oil definition). For example, if a respirator
not practical, historical information from
Recommended column. The service life
is being selected for beryllium dust at a
similar processes or analogous operations
of the OV cartridge must be considered to
concentration 2 times the exposure limit, the
may be helpful for calculating maximum
determine if the (F)PAPR or SA(F) is the
guide lists N95. This code indicates a half
exposures and evaluating potential
better selection given the high exposure
facepiece respirator with an N95 particulate
health effects. Record the airborne
concentrations. If the exposure was to
filter. If an oil mist is present (air concentration
concentration(s) on the form provided or
4-vinylcyclohexene, an SA(F) must be
greater than 0.1 mg/m3, but less than the
your own form. Go to Step 3.
selected. A PAPR could not be selected.
occupational exposure limit) either an R- or
3. Is the airborne concentration unknown?
Record the respirator you selected in the
P-series filter must be selected, even though
a) If yes, go to Step 16.
last column of the form for that chemical.
respiratory protection is not needed for the oil
b) If no, go to Step 4.
Go to Step 10.
mist. Therefore, the minimum recommended
4. Is the oxygen concentration less than
8. Select either a supplied air respirator or a
respirator would be R95 or P95. These codes
19.5% or does the potential exist for the
full facepiece respirator with filters and/or
indicate a half facepiece respirator with an
oxygen concentration to fall below 19.5%?
chemical cartridges listed in the guide under
R95 or P95 particulate filter. These codes
a) If yes, go to Step 16.
the Respirator Recommended column.
can be found in the Respirator Codes and
b) If no, go to Step 5.
If the guide lists SA or SA(F), you must
Descriptions section located in the fold-out
5. Is the chemical listed in the guide?
select the respirator recommended. Do not
back cover of this guide.
a) If yes, go to Step 6.
use air purifying respirators. For example:
b) If no, go to Step 15.
For an exposure to benzene with a hazard
If respiratory protection is desired for an
6. Record the IDLH value and the value from
ratio of 30 (15 ppm), an (F)OV could be
atmosphere with more than one chemical or
the TLV column on the form provided or
selected. For the same exposure conditions
for an air concentration that exceeds either
on one you created. Determine the hazard
to benzyl acetate, an SA must be selected.
the IDLH value or 10 times the value in the
ratio (see page 2) and record. Using this
Record the respirator you selected in the
TLV column, you must follow the directions
information, determine which condition
last column of the form for that chemical.
below for proper respirator selection. If you
describes your situation:
Go to Step 10.
need help, call 3M Technical Service at
a) Does the airborne concentration
9. Select the respirator listed in the Respirator
exceed the IDLH value? If yes, go
Recommended column. Record the
Oil: Any of numerous mineral, vegetable
respirator you selected in the last column of
and synthetic substances and animal and
b) Does the hazard ratio exceed (>) 1000?
the form for that chemical. Go to Step 10.
vegetable fats that are generally slippery,
If yes, go to Step 16.
10. Are any other air contaminants present at
combustible, viscous, liquid or liquefiable at
c) Does the hazard ratio exceed (>) 50?
room temperatures, soluble in various organic
If yes, go to Step 7.
a) If yes, go to Step 2 and repeat the
solvents such as ether but not in water.
d) Does the hazard ratio exceed (>) 10?
procedure, recording the appropriate
If yes, go to Step 8.
information for the next chemical.
e) Is the hazard ratio less than or equal
When two or more contaminants that
1. Identify the air contaminants present in
to ()) 10? If yes, go to Step 9.
act upon the same organ system are
the workplace. Include chemical name and
7. Select one of the following respirators:
present, consideration should be given
form. Classify particulate contaminants as
(1) a full facepiece, helmet or hood
to the combined effect rather than
oil or non-oil material. If the chemical is
supplied air respirator or (2) a powered air
individual effects. Consult the current
listed in this guide, it is classified. For help,
purifying respirator (PAPR) with the same
edition of Exposure Indices published
see definition of oil. The material safety
cartridge type as listed in the guide under
by the American Conference of
data sheet (MSDS) can be helpful with this
the Respirator Recommended column.
Governmental Industrial Hygienists for
How To Use This Guide
more information and the appropriate
b) If no, go to Step 14.
and would like help, go to Step 17. If no
formula. If combined effects are
14. Was more than one respirator type required
exposure limit is known, go to Step 16.
considered, calculate the hazard ratio
for the specific exposure situation (i.e.,
16. These conditions (unknown, <19.5% O ,
for the mixture.
is there more than one respirator code
>IDLH) are generally considered as IDLH
b) If no, go to Step 11.
included in the list made in the last column
or the hazard ratio exceeds 1000. Select
11. Are any of the respirators listed in the last
of the form?)? A respirator must be selected
either a positive pressure self-contained
column a particulate filter respirator (i.e.,
that satisfies all of the requirements listed
breathing apparatus (SCBA) or combination
does it have an N, R or P filter?)?
in the last column.
respirator consisting of a positive pressure
a) If yes, go to Step 12.
a) If yes, note all respirators recommended.
supplied air respirator with an auxiliary
b) If no, go to Step 14.
If your list contains more than one
SCBA. The rated duration of the auxiliary
12. Are only N-series particulate filter
respirator and all are air-purifying
SCBA should be sufficient to allow
respirator(s) listed?
respirators, select from the Identification
adequate time for escape. If 5 minutes is
a) If yes, go to Step 13.
Key the one with the highest assigned
sufficient escape time, the 3M™ Air-Mate™
b) If no, go to Step 14.
protection factor (see page 2) and one
Combination Escape SCBA is acceptable
13. Is airborne oil mist present that has not
that removes all of the contaminants,
(see Respirator Identification Key: Code
been considered as a result of one of the
if available. If SA or SA(F) is one of
SCBA). Record the respirator selected
following conditions: (1) was not listed
the respirators listed in the last column,
in the final row of the form. This is the
as a contaminant or (2) is the oil mist
this respirator must be selected over all
minimum acceptable level of respiratory
concentration greater than 0.1 mg/m³ but
others. If any of the respirator codes
protection; the selection process is finished.
less than the value in the TLV column of
contain the (F) designation, respirators
If you need help, go to Step 17.
the guide? A respirator is not required for
with half facepieces cannot be used. If
Note: If a chemical cartridge respirator is
the oil. If a respirator is not being selected
no air-purifying respirator will provide
selected, you must establish a change schedule
for the oil, the presence of the oil must
the protection required, select SA or
based on objective information and data. The
still be considered when choosing the
SA(F) from the Respirator Identification
information relied upon and the basis for the
appropriate filter.
Key. Go to Step 17.
cartridge change schedule and the basis for
a) If yes, a respirator with either an
b) If no, record the respirator listed in
reliance on the data must be described in the
R- or P-series filter must be selected.
the last column as the final respirator
respiratory protection program.
R-series filters must be changed after
selected (bottom line). A respirator
8 hours use or after the respirator is
meeting this description can be found
17. Do you need help?
loaded with or exposed to 200 mg of
by locating the code on the Respirator
a) If yes, call 3M for assistance at
aerosol. The manufacturer's service time
Identification Key. Go to Step 17.
1-800-243-4630. Follow the
recommendation must be followed for
15. If the chemical is not listed in the guide,
P-series filters. To choose a respirator
an occupational exposure limit either does
b) If no, order the selected respirator(s)
that provides the same degree of
not exist or was not located. Since it is not
from the local 3M Sales Representative
protection as originally identified, but
known what an acceptable exposure level
or Distributor.
with an R- or P-series filter, consult the
is, a respirator cannot be recommended. If
Respirator Identification Key. Record the
you have an exposure level for the material
respirator with the R- or P-series filter
that is being selected. Go to Step14.
Respirator Selection Form
Respirator Selected:
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Ethanal, Acetic aldehyde
Short OV service life
Glacial acetic acid, Meth ane
carboxylic acid, Ethanoic acid,
Acetic anhydride
Ethanoic anhydride, Acetic acid
anhydride, Acetyl oxide
2-Propanone, Dimethyl ketone,
Acetone cyanohydrin
a-Hydroxy isobutyronitrile,
2-Propane cyanohydrin,
(AIHAWEEL) 2-Cyano-2-propanol,
2-Methyllactonitrile,
Cyanomethane; Ethane nitrile;
Ethyl nitrile; Methanecarbonitrile;
3M 3530 Monitor.
Methyl phenyl ketone, Acetyl
benzene, Benzoyl methide,
Hypnone, 1-Phenylethanone
Acetylene dichloride
Acetylsalicylic acid
Acrylic aldehyde, Acrylaldehyde,
Propenal, Allylaldehyde
0.03 mg/m3* Propenamide, Acrylamide
monomer, Acrylic amide
Acroleic acid, Propenoic acid
Propenenitrile, AN, Vinyl cyanide
SA if cartridge not
disposed of after
shift, per 29 CFR
3M 3510 Monitor.
Hexanedioic acid; 1,6-Hexanedioic (F)N95
acid; 1,4-butanedicarboxylic acid
Addipic acid dinitrile; Hexanedinitrile; OV
1,4-dicyanobutane; Tetramethylene
2-Propenol, 2-Propen-1-ol, Vinyl
* TLV is lower than PEL.
* TLV is lower than PEL.
Chemical Compound Guide
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
3-Chloropropene, 1-Chloro-2-
Allyl glycidyl ether
AGE; 1-Allyloxy-2, 3-epoxy-propane (F)OV
Warning unknown.
PEL-10 ppm ceiling.
Allyl isothiocyanate
Oil of mustard, AITC,
(AIHAWEEL) Allyl thiocarbanimide,
Allyl isosulfocyanate
Allyl propyl disulfide
Onion oil, Propyl allyl disulfide,
Warn ing unknown
2-Propenyl propyl disulfide
Aluminum Metal and Insoluble Compounds
–Respirable Particulate Matter
p-Aminobenzoic acid
Aminobenzoic acid,
(AIHAWEEL) 4-Aminobenzoic acid, PABA
(See Ethanolamine)
(methylenephosphonic
(AIHAWEEL) (methylenephosphonic acid),
cartridge may be
Briquest 302-500; Briquest 301-32S;
Dequest 2000; Dequest 2001;
Nitrilotrimethanephosphonic acid;
Anhydrous ammonia
Ammonium chloride
perfluorooctanoate
(See Pentyl acetate)
sec-Amyl acetate
(See Pentyl acetate)
Amyl alcohol, 1-Pentanol,
(AIHAWEEL) Pentyl alcohol, Pentanol,
tert-Amyl methyl acetate
Aminobenzene, Phenylamine,
Anisidine (o-, p- isomers)
–ortho-Anisidine
o-Methoxyaniline (oil),
–para-Anisidine
p-Methoxyaniline (solid)
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
compounds (as Sb)Arsenic, elemental and 100 mg/m3
inorganic compounds
Hydrogen arsenide, Arsenic
trihydride, Arseniuretted hydrogen,
Arsenous hydride
0.1 fiber/cc Chrysotile, Amosite, Crocidolite,
Dual cartridge as
Tremolite, Anthophyllite, Actinolite
per 29 CFR 1910.
Asphalt (petroleum;
0.5 mg/m3 Asphaltum, Bitumen, Hot mix
R or P95 alone may
asphalt, Mineral pitch, Petroleum
be suitable for some
(as benzene-soluble
applications. See
Comment F, page 9.
compounds (as Ba)Barium sulfate
Benzoic aldehyde, Oil of bitter
(AIHAWEEL) almond, Benzenecarbonal
Benzol, Coal tar naphtha
Poor warning. SA
if cartridges are not
replaced at the start
of each shift, per 29
3M 3510 Monitor.
0.5 mg/m3 Benzoyl benzene, Diphenyl ketone, OV/N95
(AIHAWEEL) Diphenyl methanone, Phenyl ketone
Benzotrichloride
Toluene trichloride, Benzenyl
trichloride, Benzoic trichloride,
Phenyl chloroform,
Benzoyl chloride
a-Chlorobenzaldehyde,
Benzene carbonyl chloride,
Benzoic acid chloride
Benzoyl peroxide
Dibenzoyl peroxide
Acetic acid benzyl ester,
Acetic acid phenylmethyl ester,
Phenylmethyl acetate
a-Hydroxytoluene, Phenylmethanol, (F)OV
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
compounds (as Be)
Diphenyl, Phenylbenzene
Bis(2-dimethylamino-
DMAEE; Ethylamine, 2,2'-Oxybis
(N.N-dimethyl)-; Niax [R] Catalyst
Bismuth telluride
10 mg/m3* Bismuth sesquitelluride
Bismuth telluride
Borate compounds, inorganic
Borofax; Boron trihydroxide;
Hydrogen orthoborate; Kill-off;
Kjel-sorb; Orthoboric acid;
Three elephant; Trihydroxyborane
- Sodium borate, anhydrous
Borates, tetrasodium salts,
anhydrous; Borax fused; Boric acid,
disodium salt; Disodium tetraborate;
Sodium tetraborate, anhydrous
- Sodium borate, decahydrate
Borates, tetrasodium salts,
decahydrate; Borax; Borascu; Borocin;
Disodium diborate decahydrate;
Disodium tetraborate decahydrate;
Sodium pyroborate decahydrate;
Sodium tetraborate, decahydrate
- Sodium borate, pentahydrate
Borates, tetrasodium salts,
pentahydrate; Boric acid pentahydrate;
Mule team borascu; Boron sodium oxide,
pentahydrate; Sodium tetraborate,
10 mg/m3* Anhydrous boric acid, Boric
anhydride, Boric oxide
Boron tribromide
Boron trifluoride
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
0.2 ppm TLV-STEL.
provides warning.
Bromine pentafluoride
Bromochloromethane
(See Chlorobromomethane)
n-Propylbromide, Propylbromide
Butadiene, Divinyl, Biethylene,
Cartridges must be
replaced, per 29CFR
n-Butane, Methylethyl methane
Short OV service
(See Butyl mercaptan)
(See Methyl ethyl ketone)
a-Butene, But-1-ene, a-Butylene, OV
B-Butene, B-Butylene,
Dimethylethylene, Pseudobutylene
cis-Butene, cis-Butene-2,
trans-Butene, 2-trans-Butene,
Butyl Cellosolve®, Ethylene glycol
2-Butoxyethyl acetate
Acetic acid 2-butoxyethyl ester;
2-Butoxyethanol acetate; Butyl
Cel usolve acetate; Butylglycol acetate;
Ektasolve EB acetate; Ethylene glycol
monobutyl ether acetate; EGBA;
Glycol monbutyl ether acetate
Butyl acetate, Butyl ethanoate,
Acetic acid butyl ester
sec-Butyl acetate
1-Methylpropylacetate
tert-Butyl acetate
Acetic acid tert-butyl ester
2-Propenoic acid butyl ester,
1-Butanol, Butyl alcohol; Butyl
25 ppm TLV-ceiling
hydroxide; Butyric alcohol;
proposed. 3M 3510
1-Hydroxybutane; Methylolpropane;
n-Propyl carbinol, n-Butanol
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
sec-Butyl alcohol
2-Butanol, Methyl ethyl carbinol
tert-Butyl alcohol
2-Methyl-2-propanol, TBA,
n-Butylamine, 1-Aminobutane
Not specifically
better service life
Di-tert-butyl-p-cresol
(as inhalable aerosol
4-tert-Butylcatechol
p-tert-Butylcatechol; 4-(1,1-
(AIHAWEEL) 4-tert-Butyl pyrocatechol;
4-tert-Butyl 1-1,2-dihydroxy benzene
tert-Butyl chromate
0.1 mg/m³ Chromic acid, di-tert-Butyl ester
1,2-Epoxybutane; 1-Butene oxide; OV
(AIHAWEEL) 1,2-Butene oxide; 1,2-Butylene
oxide; Epoxy-butane; BO
n-Butyl glycidyl ether
BGE; 1,2-Epoxy-3-butoxy-propane OV
Lactic acid butylester
o-sec-Butylphenol
2-sec-Butylphenol
p-tert-Butyltoluene
3M 3510 Monitor.
Butal, Butaldehyde, Butalyde,
Not specifical y
(AIHAWEEL) Butanol, Butanaldehyde, Butyl
approved, but better
aldehyde, Butyral butyric aldehyde
service life than OV
Cadmium, elemental
0.002 mg/m3 TLV-
and compounds (as Cd) 9 mg/m3 fume
TWA for respirable
Calcium arsenate
0.01 mg/m3 Tricalcium arsenate, Tricalcium
o-arsenate, Cucumber dust
Calcium carbonate
Marble, Limestone
Calcium chromate
0.001 mg/m3 Calcium chrome yellow
Calcium cyanamide
0.5 mg/m3 Lime nitrogen, Calcium carbimide N95
Calcium fluoride (as F)
2.5 mg/m3 Fluorite, Fluorspar
Calcium hydroxide
5 mg/m3* Calcium hydrate, Hy drat ed lime,
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Quicklime, Pebble lime
Calcium silicate (as inhalable particulate mass)
10 mg/m3* Calcium metasilicate, Portland
cement, Wallastonite
Gypsum, Plaster of Paris
2-Camphonone, Synthetic
(F)OV/N95 3M 3510 Monitor
camphor, Gum camphor, Laurel
(Inhalable aerosol and vapor)
Aminocaproic lactam,
2-Oxohexamethyleneimine
inhalable fraction
3.5 mg/m3 Channel black, Lamp black,
Furnace black, Thermal black,
Carbonic acid gas, Dry ice
Carbon disulfide
Carbon bisulfide, Carbon disulphide OV
Carbon bisulphide, Carbon bisulfur,
Dithiocarbonic anhydride, Carbon
sulfide, Sulphocarbonic anhydride,
Carbon tetrabromide
Tetrabromomethane
Carbon tetrachloride
Tetrachloromethane
3M 3510 Monitor.
Carbonyl chloride
Carbonyl fluoride
Fluoroformyl fluoride, Carbon
10 mg/m3* Paper fiber
Cesium hydroxide
0.5 mg/m3 Chloromycetin; Levomycetin;
(AIHAWEEL) [R-(R*,R*)]-2,2-dichloro-N-[2-
hydroxy-1-(hydroxy methyl)-2-
Chlorinated diphenyl oxide
0.5 mg/m3 Hexachlorodiphenyl oxide
provides warning.
PEL-1 ppm ceiling.
Chlorine dioxide
Chlorine oxide, Chlorine peroxide
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Chlorine trifluoride
Chlorine fluoride
Chloroacetaldehyde
2-Chloroethanal,
Chloroacetaldehyde (40% aqueous)
Monochloroacetone, 1-Chloro-2-
propanone, Chloracetone
a-Chloroacetophenone 16
Phenacyl chloride, Chloromethyl
(F)OV/N95 Irritation also
phenyl ketone, Phenyl
provides warning
chloromethyl ketone (tear gas)
Chloroacetyl chloride
Chloracetyl chloride
Monochlorobenzene, Chlorobenzol, OV
Phenyl chloride, MCB
o-Chlorobenzylidene
Chlorobromomethane
Bromochloromethane, Methylene OV
Poor warning. Short
chlorobromide, CBM, Halon™ 1011
OV service life.
1-Chloro-1,1-difluoro-
HCFC-142b, Dymel® 142b,
Short OV service
(AIHAWEEL) Genetron™ 142b, Chlorodifluoro-
ethane, a-chloroethylidene fluoride
2-Chloro-1,3-butadine
(See B-Chloroprene)
Chlorodifluoromethane
Warning unknown.
Polychlorinated biphenyl, PCB
(F)OV/P95 See Comment D,
0.5 mg/m3 Polychlorinated biphenyl, PCB
(F)OV/P95 See Comment D,
1-Chloro,2,3-epoxy-
(See Epichlorohydrin)
propane2-Chloroethanol
(See Ethylene chlorohydrin)
(See Vinyl chloride)
Trichloromethane
3M 3510 Monitor.
bis-(2-Chloroisopropyl)
DCIPE, Dichloroisopropyl ether
bis-Chloromethyl ether
Dichloromethylether, BCME,
Chloro (chloromethoxy) methane,
Chloromethyl ether
Chloropentafluoro-
Warning unknown.
Short service life.
Nitrotrichloromethane,
Trichloronitromethane,
provides warning
2-Chloro-1,3-Butadiene;
Chlorobutadiene; beta-Chloroprene
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
1-Chloro-2-propanol
1-Chloroisopropyl alcohol;
2-Chloro-1-propanol
2-Chloropropanol; 2-Chloropropyl OV
alcohol; 1-Hydroxy-2-chloropropane;
Propylene chlorohydrin
2-Chloropropionic
Isopropyl chloride; 2-Propyl
Short OV service life
(AIHAWEEL) chloride, isoprid, 2-CP
2-Chloropropionic acid
a-Chloropropionic acid
Warning unknown.
3M 3510 Monitor.
Chlorosulfonic acid
CSA, Chlorosulfuric acid
(F)AG/N95 HCl, SO2 hydrolysis
2-Chloro-1,1,1,2-tetra-
Short OV service
(AIHAWEEL) HCFC124,
HFA124, Fluorocarbon 124
Chlorotrifluoroethylene
CFE, CTFE, Trifluorovinylchloride, SA
Short OV service
(AIHAWEEL) Trifluorochloroethylene
Chromates of lead and
(See Lead, Zinc chromate)
Chromium, metal and
inorganic compounds
–Metal and Cr III
–Water-soluble Cr VI
(includes Chromic acid)
–Insoluble Cr VI
Chromyl chloride
Chromium oxychloride,
Chlorochromic anhydride
-Bituminous or lignite
Coal tar pitch volatiles 700 mg/m3
(as Benzene solubles)
respirators with
2096, 2097 or 7093C
filters specifically
recommended. See
Comment F, page 9.
Cobalt, elemental and
inorganic compounds
Cobalt carbonyl (as Co)
Ineffective sorbents
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Cobalt hydrocarbonyl
Ineffective sorbents
(as Co)Coke oven emissions
8247, 8577 or res-
pirators with 2076HF,
2078, 2096 or 2097
filters specifically
recommended. See
Comment F, page 9.
–Dust and mist
Cotton dust (raw)
for disposables, per
OSHA cotton dust
standard. If oil
aerosol present, use
Cresol (all isomers)
(See Silica, crystalline)
B-Methylacrolein, Propylene
aldehyde, Crotontonic aldehyde
2.5 mg/m3 Greenland spar, Icetone
Isopropyl benzene, 2-Phenyl
Cumene hydroperoxide
Isopropylbenzene hydroperoxide;
CHP; a,a'-Dimethylbenzyl
(AIHAWEEL) hydroperoxide; Cumyl
Cyanogenamide, Carbodiimide
Cyanides (as CN)
Dicyan, Oxalonitrile
Cyanogen chloride
Poor warning. Short
service life.
Hexahydrobenzene,
provides warning.
3M 3510 Monitor.
Hexalin, Hydralin,
Hydroxycyclohexane, Anol,
Hexahydrophenol, Cyclohexyl
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Pimelic ketone, Cyclohexyl ketone OV
Benzene tetrahydride
Hexahydroaniline,
0.5 mg/m3 RDX; sym-Trimethylene
trinitramine; Hexahydro-1,3,5-
1,3-Cyclopentadiene
Warning unknown.
Short OV service life.
Decabromodiphenyl
DBDPO, Decabromodiphenyl ether, N95
(AIHAWEEL) bis-(pentabromophenyl) ether
Decylene, alpha-decene
Diacetone alcohol
Diacetone, 4-Hydroxy-4-methyl-
2-pentanone, 2-Methyl-2-pentanol
Di-2-propenylamine
1,2-Diaminoethane
(See Ethylenediamine)
Diatomaceous earth
(uncalcined) Diazomethane
Azimethylene, Diazirine
Warning unknown.
Dibromochloropropane
Warning unknown.
DBCP; 1,2-Dibromo-
SA(F); no change
schedule allowed.
1,2-Dibromoethane
(See Ethylene dibromide)
1-Butanamine, n-Butyl,
Di-n-butylamine, DNBA
2-N-Dibutylaminoethanol
Dibutylaminoethanol; N,N-dibutyl- (F)OV
N-(2-hydroxyethyl) amine
preferable if heat
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Dibutyl phosphate
Dibutyl acid-o-phosphate, Di-n-butyl
hydrogen phosphate, Dibutyl
Dibutyl phthalate
DBP; Dibutyl; 1,2-Benzene-
Dichloroacetic acid
Acetic acid, dichloro-;
2,2-Dichloroacetic acid;
Dichloroehanoic acid; Urmer's liquid
Dichloroacetylene
Warning unknown.
Short OV service
o-Dichlorobenzene
1,2-Dichlorobenzene;
o-Dichloro-benzol
page 8. PEL-50 ppm
ceiling. 3M 3510
p-Dichlorobenzene
1,4-Dichlorobenzene; Dichloricide; (F)OV/N95 3M 3510 Monitor
1,4-Dichloro-2-butene
2-Butylenedichloride;
Dichlorodifluoromethane 50,000
Refrigerant 12, Freon® 12
Warning unknown.
Short OV service life.
1,3-Dichloro-5,5-
0.2 mg/m3 Halane, Dactin
Ethylidene chloride
1,2-Dichloroethane
(See Ethylene dichloride)
1,1-Dichloroethylene
(See Vinylidene chloride)
1,2-Dichloroethylene
Acetylene dichloride, Dioform
Dichloroethyl ether
bis-(2-Chloroethyl) ether;
PEL-15 ppm ceiling
Refrigerant 21, Freon® 21,
Warning unknown.
Short OV service life.
1,1-Dichloro-1-fluoro-
Short OV service
(AIHAWEEL) HFA141b,
Fluorocarbon 141b
(See Methylene chloride)
Warning unknown.
PEL-10 ppm ceiling.
2,4-Dichlorophenol
R or P95 may also
Phenol: 2,4-Dichloro
be needed if material
1,2-Dichloropropane
(See Propylene dichloride)
1,3-Dichloropropene
1,3-Dichloropropylene
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
2,2-Dichloropropionic
(F)OV/N95 Warn ing unknown
acidDichlorotetra-
Freon® 114, Refrigerant 114,
Warning unknown.
Halon™ 242, FC-114
Short OV service life.
Dicyclopentadiene
Dicyclopentadienyl iron
10 mg/m3* bis-Cyclopentadienyl iron
100 mg/m3 Astral oil, Gas oil, Coal oil, Fuel oil, OV/P95
(total hydrocarbons,
Home heating oil, Marine diesel fuel
vapor and aerosol)
DEA, di-(2-Hydroxyethyl) amine
AM not specifical y
Diethylaminoethanol
2-Diethylaminoethyl alcohol;
Diethylbenzenes, mixed
DEB; Dowtherm J;
1,2-Diethylbenzene;
1,3-Diethylbenzene;
1,4-Diethylbenzene
Diethylene glycol
DEG; Diglycol; 2,2'-Dihydroxy-
(AIHAWEEL) diethyl ether
and G, pages 7 & 9
Diethylene glycol
2-(2-Ethoxyethoxy) ethanol,
(AIHAWEEL) DiGGE, Diethylene glycol
ethyl ether, Glycol ether DE,
Carbitol, Dioxitol
Diethylene triamine
(See Ethyl ether)
Di-2-ethylhexyl phthalate
(See Di-sec-octyl phthalate)
Metacetone, Propione,
3-Pentanone, Ethyl propionyl
Diethyl phthalate
Ethylphthalate, DEP
Difluorodibromo-
Dibromodifluoromethane,
Freon® 12B2, DFBM
1,1-Difluoroethane
HFC-152a, Freon® 152a,
Ineffective sorbents
(AIHAWEEL) Dymel® 152a, Genetron™ 152a,
Ethylidene fluoride
Refrigerant 32; R32; Hydrofluoro-
Warning unknown.
(AIHAWEEL) carbon 32
Diglycidyl ether
di-(Epoxypropyl) ether; bis-(2,3-
Epoxypropyl)-ether; 2-Epoxypropyl
ether; Diallyl ether dioxide; DGE
Dihydroxybenzene
(See Hydroquinone)
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Diisobutyl ketone
2,6-Dimethyl-4-heptanone; sym-
Diisopropylacetone; Isovalerone;
Diisopropylamine
Dimethoxymethane
Dimethyl acetamide
N,N-Dimethyl acetamide; DMAC
Anhydrous dimethylamine
AM not specifical y
approved. Short OV
service life.
Dimethylaminobenzene
N,N-Dimethylaniline
Dimethyl carbamoyl chloride
Chloroformic acid dimethylamide; (F)MG
Dimethyl carbamic chloride;
Dimethylcarbamyl chloride; DMCC
Dimethyldichlorosilane
Dichlorodimethylsilane
Dimethyl disulfide
Dimethyldisulfide; Dimethyl
disulphide; 2,3-Dithiabutane; DMDS
Dimethylethoxysilane
Ethoxydimethyl silane
Methyl ether, Wood ether
Dimethyl formamide
N,N-Dimethyl formamide; DMF
(See Diisobutyl ketone)
1,1-Dimethylhydrazine
Dimethylphthalate
1,1-Dimethylpropyl acetate
(See Pentyl acetate)
Dimethyl sulfide
DMS, Thiobis (methane)
since H S may also
Dimethyl sulfoxide
DMSO, Methylsulfoxide
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Dimethyl terephthalate
o-Dinitrobenzene,
1,2-Dinitrobenzene;
m-Dinitrobenzene;
1,3-Dinitrobenzene;
p-Dinitrobenzene,
3,5-Dinitro-o-toluamide
Dinitolmide ; 2-Methyl-3,
5-dinitrobenzamide; Zoalene;
Coccidin; Salcostat
Diethylene dioxide; Diethylene
ether; p-Dioxane; 1,4-Dioxane
1,3-Dioxacyclopentane; 1,3-Dioxolan; OV
Dioxolane; 1,3-Dioxole, dihydroethylene
glycol formal; Formal glycol;
Glycolformal; Glycol methylene ether
DPA, N-phenylaniline
odor is a problem
4,4-Diphenylmethane
(See Methylenebisphenyl
Dipropylene glycol
Dipropylene glycol monomethyl
ether, Dowanol™ 50B
Butyrane, 4-Heptanone
Di-sec-octyl phthalate
DOP, bis-(2-Ethylhexyl)phthalate,
Di-2-ethylhexyl phthalate, DEHP
DVB, Vinylstyrene
Dodecyl mercaptan
1-Dodecanethiol, n-Dodecyl
R or P filter may be
mercaptan, n-Lauryl mercaptan,
needed with oily
1-Mercaptododecane
1,1-Dipheylethane with
(as inhalable aerosol and/or vapor
(AIHAWEEL) ethylated benzenes
10 mg/m3* Corundum
Warning unknown.
difluoromethyl ether; Ethrane
Short OV service
life. 3M 3510 Monitor.
2-Chloropropylene oxide;
3M 3510 Monitor.
g-Chloropropylene oxide
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
1,2-Epoxypropane
(See Propylene oxide)
2,3-Epoxy-1-propanol
Dotycin, Erycin, Ericynum,
(AIHAWEEL) E-Mycin™, Pentadecanoic acid
Dimethyl ethane, Methylmethane
Short OV service life
Ethylolamine, Monoethanolamine, OV
B-Aminoethyl alcohol,
Ethylene glycol monoethyl ether,
Glycol monoethyl ether,
Cellosolve® solvent
2-Ethoxyethyl acetate
Cellosolve® acetate, Ethylene
glycol monoethyl ether acetate
Acetic ester, Acetic ether,
Acrylic acid ethyl ester
Short OV service
Anhydrous ethylamine,
AM not specifically
Aminoethane, Monoethylamine
approved. Short OV
service life.
Ethyl amyl ketone
EAK, 5-Methyl-3-heptanone
Phenylethane, Ethylbenzol
Short OV service
Ethyl butyl ketone
Chloroethane, Monochloroethane, SA
Hydrochloric ether
Ethyl cyanoacrylate
2-Cyanoacrylic acid, ethyl ester;
2-Cyano-2 propenoic acid, ethyl ester;
ECA; Ethyl alpha-cyanoacrylate;
Ethyl 2-cyanoacrylate; Ethyl 2-cyano-
Ethyl tert-butyl ether
tert-Butyl ethyl ether; 1.1-Dimethyl- OV
ehtyl ether; ETBE; 2-Ethoxy-2-
methylpropane; Ethyl tert-butyl oxide;
Ethyl 1,1-dimethylethyl ether
Acetene, Bicarburetted hydrogen, SA(F)
Elayl, Ethene, Olefiant gas
Ethylene chlorohydrin
2-Chloroethanol, 2-Chloroethyl
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
1,2-Diaminoethane;
Ethylene dibromide
1,2-Dibromoethane
Ethylene dichloride
Ethylene chloride;
1,2-Dichloroethane
3M 3510 Monitor.
Ethylene glycol, aerosol
60.3 mg/m3 100 mg/m3 Ethylene alcohol; Glycol;
and G, pages 7 & 9
Ethylene glycol dinitrate 82
Glycol dinitrate, Nitroglycol
Warning unknown.
PEL-0.2 ppm ceiling.
Ethylene glycol methyl
(See 2-Methoxyethyl acetate)
ether acetateEthyleneimine
Ethyleimine, Dimethylenimine,
Poor warning. OSHA
Dihydroazirine, Azirane, Aziridine,
requires SA(F); see
29 CFR 1910.1003.
Dimethylene oxide; 1,2-Epoxy
Poor warning. OSHA
requires SA(F); no
al owed. 3M 3550
Diethyl ether, Ethyl oxide, Ether
Short service life.
3M 3530 Monitor.
Ethyl methanoate, Formic acid
Short service life
2-Ethylhexanoic acid
Butylethylacetic acid;
(as inhalable aerosol and vapor)
2-Butylbutanoic acid; 2-Ethylcaproic acid;
2-Ethylhexoic acid; Ethylhexoic acid
Ethylidene chloride
(See 1,1-Dichloroethane)
Ethylidene norbornene
Ethanethiol, Ethyl sulfhydrate
N-Ethylmorpholine
4-Ethylmorpholine
Tetraethyl silicate, Ethyl
Ferric/Ferrous salts,
(See Iron salts)
solubleFerrovanadium, dust
Fibrous glass, dust
(See Synthetic vitreous fibers -
Continuous filament glass fibers)
(as inhalable particles)
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Fluorides (as F)
2.5 mg/m3 Synonyms vary depending upon
specific compound
Unknown reaction
products with sorbent.
Fluorotrichloromethane
Methylene oxide, Formalin
provides warning.
3M 3720 Monitor.
Hydrogencarboxylic acid,
2-Furaldehyde, Furfuraldehyde,
Furfuryl alcohol
2-Hydroxymethylfuran, 2-Furyl-
Gallium arsenide
Gallium monoarsenide
Germanium tetrahydride
Germane, Germanium hydride
Warning unknown.
Glass, fibrous or dust
(See Synthetic vitreous fibers)
10 mg/m3* Glycerol
2-Hydroxymethyloxiran;
Hydroxymethyl ethylene oxide;
Epoxypropyl alcohol; 3-Hydroxy-
propylene oxide; 2,3-Epoxy-1-propanol
Glycidyl methacrylate
Glycol monoethyl ether
(See 2-Ethoxyethanol)
0.1 mg/m3 Ethanedial, Biformyl, Diformyl,
(F)OV/N95 Short OV service for
(as inhalable aerosol
Oxaldehyde, 1,2-Ethanedione
vapor at 10X OEL
and/or vapor)Grain dust (oat, wheat,
Graphite (natural)
2.5 mg/m3* Plumbago, Potelot, Corbo minerals, N95
(respirable) Black lead, Silver lead
Graphite (synthetic)
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
(See Calcium sulfate)
compounds (as Hf)Halothane
2-Bromo-2-chloro-1,1,1-
Normal heptane, n-Heptane
(See Methyl n-amyl ketone)
(See Ethyl butyl ketone)
Hexachlorobenzene
0.463 mg/m3 0.002 mg/m3 Perchlorobenzene
Hexachlorocyclopenta-
Hexachloroethane
Hexachloronaphthalene 2 mg/m3
0.2 mg/m3 Halowax™ 1014
Hexafluoroacetone
1,1,1,3,3,3-Hexafluoro-2-propanone SA
Warning unknown.
Short OV service life.
1,1,1,3,3,3-Hexafluoro-
HFC-236 fa; FC-236 fa; hydro-
Ineffective sorbents
(AIHAWEEL) fluorocarbon 236 fa; FE-13
Hexafluoropropylene
1,1,2,3,3,3-Hexafluoro-1-propene; SA
Short OV service life.
Hexafluoropropene; Perfluoro-1-
propene; Perfluoropropylene;
Perfluoropropene; Fluorocarbon
Hexahydrophthalic
0.005 mg/m3 1,2-Cyclohexanedicarboxylic
acid anhydride; Cyclohexane-1,
2-dicarboxylic anhydride, cis and
(as inhalable vapor
trans mixture; 1,2-Cyclohexanedi-
carboxylic anhydride; Hexahydroph-
thalic acid anhydride; Hexahydro-1,
3-isobenzofurandione; HHPA;
HHPAA; 1,3-Isobenzofurandione,
diisocyanateHexane (n-Hexane)
Hexyl hydride, Normal hexane
Hexane (other isomers)
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
1,6-Hexanediamine
Hexamethylenediamine;
(AIHAWEEL) 1,6-diaminohexane;
Hexanediol diacrylate
HDODA; Propenoic acid,
(AIHAWEEL) 1,6-hexanediol ester
(See Methyl n-butyl ketone)
Butyl ethylene; Hexene; Hex-1-ene; OV
Hexene-n-1; Hexylene
(See Methyl isobutyl ketone)
sec-Hexyl acetate
1,3-Dimethylbutyl acetate;
Methylamyl acetate; Methylisoamyl
acetate; Methylisobutyl carbinol
Mixture of 1-Methoxy-1,1,2,2,3,3,4, OV
(AIHAWEEL) 4,4-nonafluorobutane (40%) and
3,3,3-hexafluoropropane (60%);
Mixture of 1-Methoxyperfluorobu-
tane (40%) and 1-Methyoxyper-
fluoroisobutane (60%)
Anhydrous hydrazine
Hydrogenated terphenyls
Hydrogen bromide
Hydrobromic acid, HBr
Not specifical y
Hydrogen chloride
Hydrochloric acid, HCl,
Hydrogen cyanide
Hydrocyanic acid, Prussic acid
10X OEL maximum.
Hydrogen fluoride
Anhydrofluoric acid, HF, Etching
acid, Fluorohydric acid, Fluoric acid
Hydrogen peroxide
Peroxide, Hydrogen dioxide
Warning unknown.
Hydrogen selenide
Selenium hydride
(as Se)Hydrogen sulfide
Sulfuretted hydrogen, H S,
Hydrosulfuric acid, Hepatic gas
AG-escape (olfactory fatigue)
Quinol; Dihydroxybenzene;
(F)OV/N95 See Comment D,
Hydrotreated kerosene
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
4-Hydroxy-4-methyl-2-
(See Diacetone alcohol)
pentanone 2-Hydroxypropyl
compounds (as In)Iodine and Iodides
(inhalable fraction and vapor)
0.000019-1.1 0.6
Iron oxide (as respirable particulate mass)
Ferric oxide, Hematite,
Burnt sienna, Burnt umber,
Jeweler's rouge, Rouge
Iron pentacarbonyl
Warning unknown.
Iron salts, soluble
Ferrous sulfate and chloride;
Ferric chloride, nitrate and sulfate
(See Pentyl acetate)
3-Methyl-1-butanol, Isobutyl
carbinol, Isopentyl alcohol, Fusel oil
1,1-Dimethylethene,
1,1-Dimethylethylene, Isobutylene,
Isobutyl acetate
2-Methylpropyl acetate
Isobutyl alcohol
Isobutanol, IBA, 2-Methyl-1-
Methylpropane; 2-methylpropane
Short OV service life.
Isobutyl nitrate
IBN; Nitrous acid, isobutyl
(Inhalable aerosol and vapor)
ester; Nitrous acid, 2-methylpropyl
Isobutyraldehyde
Isobutanal, 2-Methylpropanal,
Short OV service life.
Isobutyric aldehyde, Isobutyl aldehyde,
2-Methylpropionaldehyde, 2-Methyl-1-
propanal, Valine aldehyde
Isocyanuric acid
s-Triazinetriol,
preferable, if wet
(AIHAWEEL) s-Triazine-2,4,6(1H,3H,5H)-trione
Isooctyl alcohol
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
3,5,5-Trimethyl-2-cyclohexene-1-one OV
Isophorone diisocyanate
Isophthalic acid
1,3-Dicarboxylic acid;
(respirable) m-Phthalic acid;
(AIHAWEEL) IA; IPA
2-Methyl-1,3-butadiene
Isopropoxyethanol
IPE, Isopropyl glycol, Ethylene
glycol monoisopropyl ether,
Isopropyl Cellosolve®
Isopropyl acetate
Isopropyl ester of acetic acid,
sec-Propyl acetate
Monoisopropylamine,
AM not specifical y
N-Isopropylaniline
o-Isopropylaniline, o-Amino-
Diisopropyl ether
Isopropyl glycidyl ether 1000
Isopropoxymethyl-oxiran; 1,2-
Isopropyl epoxypropyl ether; IGE
China clay, Aluminum silicate
Carbomethene, Ethenone
Warning unknown.
200 mg/m3 Deobase, Kerosine, Diesel No. 1
(Total hydrocarbon vapor)
(See specific ingredients)
Lead, elemental and
inorganic compounds
0.012 mg/m3* Chrome orange, Red
(See Calcium carbonate)
(AIHAWEEL) cyclohexene; 4-isopropyl-1-
methylcyclohexene; p-mentha-
1,8-diene; Cinene; Cajeputene
Lithium fluoride (as F)
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Lithium hydroxide
Lithium hydroxide
Dilithium oxide, Lithium
Liquefied petroleum gas,
Warning unknown.
Mixture with com-
pounds with short
OV service life.
Magnesium carbonate
-Respirable fraction
Magnesium oxide fume
10 mg/m3* Magnesia fume
Maleic anhydride
(F)OV/N95 Poor warning
Manganese, elemental
compounds (as Mn)
Manganese cyclopenta-
Properties of vapor
dienyl tricarbonyl
(See Calcium carbonate)
(inhalable) 2,4,6-Triamino-1,3,5-Triazine,
(AIHAWEEL) Cyanuramide
2-Mercaptobenzo-
Mercaptobenzothiazole;
2(3H)-Benzothiazolyl mercaptan;
2-Mercaptoethanol, 2ME,
(AIHAWEEL) 2-Hydroxy-1-ethanethiol,
2-Thioethanol, Thioethyleneglycol,
0.025 mg/m3* Quicksilver, Hg
–Alkyl compounds
–Aryl compounds
vapor pressure only
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Dust with essentially
no vapor pressure
only. Hg/N95 for
volatile liquids.
Isobutenyl methyl ketone, Methyl (F)OV
isobutenyl ketone, Isopropylidene
Methacrylic acid
a-Methacrylic acid
Biogas; Fire damp; Marsh gas;
Short OV service life.
Methylhydride; Natural gas;
R 50 (refrigerant)
(See Methyl mercaptan)
2-Methoxyethanol
Ethylene glycol monomethyl ether, OV
Methyl Cellosolve®
2-Methoxyethyl acetate 4000
Ethylene glycol methyl ether
acetate, Ethylene glycol
monomethyl ether acetate, Methyl
Cellosolve® acetate
p-Methoxyphenol, Hydroquinone N95
3-Methoxypropyl amine
1-Propanimine, 3-Methoxy
provides warning.
AM not specifical y
Acetic acid, methyl ester; Methyl
acetic ester; Methyl ethanoate
Methyl acetylene
Propyne, Allylene
Warning unknown.
service life.
Methyl acetylene
MAPP gas, Methyl acetylene-allene SA
propadiene mixture
mixture, Propyne-allene mixture
Methyl propenoate
Methylacrylonitrile
2-Methyl-2-propenenitrile, Isoprene SA
Dimethyoxymethane, Methyl
formal, Formal, Dimethylacetal
Methanol, Wood alcohol, Carbinol SA
Methyl amyl alcohol
Methyl isobutyl carbinol
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Methyl n-amyl ketone
n-Amyl methyl ketone, 2-Heptanone OV
Monomethyl aniline, MA,
Short OV service life.
Use of 60928Cartridge/
Filter recommended
by 3M; not specifical y
approved for methyl
2-Methylbutyl acetate
(See Pentyl acetate)
Methyl n-butyl ketone
Methyl Cellosolve®
(See 2-Methoxyethanol)
Methyl Cellosolve® acetate
(See 2-Methoxyethyl acetate)
Methyl chloroform
1,1,1-Trichloroethane
Methyl 2-cyanoacrylate
Methylcyclohexane
Cyclohexylmethane,
Methylcyclohexanol
Hexahydrocresols
o-Methylcyclohexanone 2500
2-Methylcyclohexanone
SA preferable if
manganese tricarbonyl
(as Mn)Methylenebisphenyl
MDI; 4,4'-Diphenylmethane
diisocyanate; Methylene-bis-
(4-phenyl isocyanate)
Methylene chloride
Dichloromethane, Methylene
SA(F); no change
schedule allowed.
Short OV service life.
3M 3530 Monitor.
4,4'-Methylene-bis-
MOCA; DACPM; 4,4'-Methylene
(2-chloroaniline)
Methylene-bis-(4-
cyclohexylisocyanate)4,4'-Methylene dianiline
Warning unknown.
Use OV/N100 if heat
is involved. See
29 CFR 1910.1050.
Methyl ethyl ketone
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Methyl ethyl ketone
Methyl ethyl ketoxime
2-Butanone oxime, MEKO
Methyl methanoate, Formic acid, SA
Short OV service
5-Methyl-3-heptanone
(See Ethyl amyl ketone)
Methyl hydrazine
Monomethyl hydrazine
Warning unknown.
Short OV service
Methyl isoamyl ketone
5-Methyl-2-hexanone, 2-Methyl-
Methyl isobutyl carbinol
(See Methyl amyl alcohol)
Methyl isobutyl ketone 3000
Methyl isocyanate
Isocyanic acid, methyl ester
Methyl isopropyl ketone
MIPK, 3-Methyl-2-butanone
Methyl mercaptan
Mercaptomethane; Methanediol;
Methyl sulfhydrate;
Thiomethyl alcohol
Methyl methacrylate
Methacrylic acid, methyl ester
1-Methylnaphthalene
a-Methylnaphthalene;
a-Methyl naphthalene
2-Methylnaphthalene
B-Methylnaphthalene;
B-Methyl naphthalene
Methyl propyl ketone
MPK, 2-Pentanone, Ethyl acetone (F)OV
n-Methyl-2-pyrrolidone
NMP; 1-Methyl-2-pyrrolidone;
m-Pyrol; n-Methyl pyrrolidone
Tetramethoxy silane
a-Methyl styrene
1-Methyl-1-phenyl-ethylene, AMS OV
ppm ceiling.
Methyl tert-butyl ether
tert-Butyl methyl ether;
Methyltrichlorosilane
Trichloromethylsilane
(F)AG/N95 Irritation provides
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Methyl vinyl ketone
Acetyl ethylene; 3-Buten-2-one;
3-Butene-2-one; Butenone;
d(3)-2-Butenone; Methylene
acetone; Methyl vinyl acetone;
g-Oxo-a-Butylene
(less than 1% quartz)
(See Stoddard solvent)
Mineral (rock), wool fiber
(See Synthetic vitreous fibers–Glass,
Rock or Slag wool fibers)
Molybdenum (as Mo)
–Soluble compounds
(as respirable particulate)
–Insoluble compounds
(as inhalable particulate)
(as respirable particulate)
Monochloroacetic acid
MCAA, Chloroethanoic acid
(as inhalable fraction and vapor)
Monochlorobenzene
(See Chlorobenzene)
Monomethyl aniline
(See Methyl aniline)
Monomethyl hydrazine
(See Methyl hydrazine)
Tetrahydro-1,4-oxazine;
Diethylenimide oxide
Naphtha (coal tar)
Naphtha, Crude solvent coal tar
naphtha, High solvent naphtha,
provides warning.
White tar, Naphthalin
3M 3510 Monitor.
Natural rubber latex
0.0001 mg/m3 Caoutchouc; India rubber;
(as inhalable total
Natural latex; Natural rubber;
NRL; Polyisoprene; Rubber
–Elemental/metal
–Insoluble compounds
–Soluble compounds
Nickel tetracarbonyl
sorbent effective-
Nickel subsulfide
0.5 mg/m3 3-(1-Methyl-2-pyrrolidyl) pyridine
Aqua fortis, White fuming nitric
Ineffective sorbents
acid (WFNA), Red fuming nitric
acid (RFNA), Hydrogen nitrate
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Nitrogen monoxide, NO
Ineffective sorbents
Azoic diazo component 37,
p-Aminonitro-benzene, Fast red GG
base, 4-Nitroaniline, PNA
Nitrobenzol, Oil of mirbane
p-Nitrochlorobenzene
4-Chloronitrobenzene,
p-Chloronitrobenzene,
Nitrogen dioxide
Nitrogen tetroxide, NTO, Dinitrogen SA
Ineffective sorbents.
tetroxide, Nitrogen peroxide
PEL-5 ppm ceiling.
Nitrogen trifluoride
Nitrogen fluoride
Warning unknown.
Nitroglycerin (NG)
Glyceryl trinitrate, Trinitroglycerin
sec-Nitropropane
5-Nitro-o-toluidine
(Inhalable particulate matter)
5-Nitro-2-toluidine;
Azoic Diazo Compound 12
Nitrotrichloromethane
(See Chloropicrin)
Dinitrogen monoxide
Warning unknown.
Octachloronaphthalene
0.1 mg/m3 Halowax™ 1051
Octane (all isomers)
Normal octane; Isooctane
Alcohol C-8, Capryl alcohol,
(AIHAWEEL) Heptyl carbinol, n-Octanol,
1-Hydroxyoctane, N-Octyl alcohol
a-Octylene, a-Octene
Oil mist (mineral)
White mineral oil, Cutting oil, Heat- R or P95
treating oil, Hydraulic oil, Cable oil,
method that does
not collect vapor.
0.005 mg/m3 TLV-
TWA proposed for
oils that contain PNAs.
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Osmium tetroxide
Oxalic acid dihydrate,
Ethane dioic acid
p,p'-Oxybis (Benzene-
0.1 mg/m3 Benzenesulfonic acid, 4,4'-Oxybis- N95
sulfonyl hydrazide)
dihydrazide; OBSH; Diphenyl ether
4,4'-disulfohydrazide
Oxygen difluoride
Difluorine monoxide, Fluorine
Triatomic oxygen
6000 with 2078 or
2097 filters recom-
–Moderate work
mended by 3M for
10X OEL. Not NIOSH
approved for ozone.
Paraffin wax fume
Particulate polycyclic
(See Coal tar pitch volatiles)
aromatic hydrocarbons
Particulates Not Otherwise Regulated
Nuisance particulates
This category includes
many materials. For
-Respirable fraction
oils, and R or P95
filter/ respirator is
(See Chlorodiphenyl)
Stable pentaborane, Pentaboron
Pentachloronaphthalene
0.5 mg/m3 Halowax™ 1013
10 mg/m3* Tetramethylolmethane
PETA; 2-Propenoic acid, 2-
(AIHAWEEL) (hydroxymethyl)-2-[[(1-oxo-2
propenyl) oxy] methyl]-1,3-
1,1,1,2,2-Pentafluoro-
Pentafluoroethane; HFC-125;
Ineffective sorbents
(AIHAWEEL) Fluorocarbon 125
Pentane, all isomers
(See Methyl propyl ketone)
1,1,1,3,3-Pentafluoro-
HFC-245fa, R-245fa,
(AIHAWEEL) Genetron 245fa
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Isoamyl acetate, 1-pentanol acetate, OV
2-pentanol acetate, 3-Pentyl acetate,
2-Methylbutyl acetate, 1,1-Dimethyl-
Perchloroethylene
Tetrachloroethylene, Perk
PMM, Trichloromethyl sulfur
Perchloryl fluoride
Chlorine oxyfluoride
Perfluorobutyl ethylene
1-Hexane, 3,3,4,4,5,5,6,6,
Short OV service life
6-nonafluoro; 1H, 1H,
2H-Perflourohexene; PFBE
Perfluoroisobutylene
Octafluoroisobutylene,
Warning unknown.
Octafluoro-sec-butene, PFIB
Short OV service
(Call 3M at 1-800-243-4630)
Petroleum distillates
Petroleum naphtha, Aliphatic
petroleum naphtha, Petroleum ether
(95 to 115°C), Naphtha
(See Gasoline, Stoddard solvent
and VM&P Naphtha)
Phenacyl chloride
Carbolic acid, Monohydroxy
m-Phenylenediamine
0.1 mg/m3 1,3-Benzenediamine;
m-Diaminobenzene
o-Phenylenediamine
0.1 mg/m3 1,2-Benzenediamine;
o-Diaminobenzene; Orthamine
p-Phenylenediamine
0.1 mg/m3 p-Diaminobenzene; 1,4-Diamino-
Phenyl ether, vapor
Diphenyl ether, Diphenyl oxide
Phenyl ether-biphenyl
Dowtherm™ A, Diphenyl oxide-
diphenyl mixture
Phenyl glycidyl ether
Glycidyl phenyl ether; Phenyl
epoxypropyl ether; 1,2-Epoxy-3-
phenoxy propane; PGE
Hydrazinobenzene
Phenyl mercaptan
Benzenethiol, Thiophenol
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Carbonyl chloride, Carbon
oxychloride, Chloroformyl chloride
Hydrogen phosphide, Phosphorus SA
hydride, Phosphorated hydrogen
White phosphoric acid,
N95 with appropriate
o-phosphoric acid,
m-phosporic acid
2-Phosphono-1,2,4-
butanetricarboxylic acid
Phosphorus (yellow)
0.1 mg/m3 White phosphorus, WP
If no phosphorus
vapor or phosphine
Phosphorus oxychloride
Phosphoryl chloride
Phosphoric chloride
pentachloridePhosphorus pentasulfide 750 mg/m3
Phosphoric sulfide
Phosphorus trichloride 50
Phosphorus chloride
Phthalic anhydride
PAN; 1,3-Isobenzofurandione
m-Phthalodinitrile
Isophthalodinitrile, IPN,
a-Picoline, 2-Methyl-pyridine
b-Picoline, 3-Methyl-pyridine
g-Picoline, 4-Methyl-pyridine
0.0005 mg/m3 0.1 mg/m3 2,4,6-Trinitrophenol, Lyddite,
Pertite, Shimose, Melinite
Dihydrochloride salt of
Hexahydropyridine
Plaster of Paris
(See Calcium sulfate)
Platinum (as Pt)
–Soluble salts
Polychlorinated biphenyls
(See Chlorodiphenyls)
Polyethylene glycols
PEG, Polyoxyethylene, PGE
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Polypropylene glycols
Polyvinyl chloride
Cloroethylene homopolymer,
Cloroethylene polymer, Cloroethene
polymer, Polychloroethylene, Vinyl
Chloride homoploymer, Vinyl
chloride polymer, PVC
10 mg/m3* Hydraulic cement, Cement,
(less than 1% quartz)
Portland cement silicate
Potassium bromate
0.1 mg/m3 Bromic acid, Potassium salt
Potassium hydroxide
Caustic potash, Lye,
Potassium hydrate
Dimethyl methane n-Propane;
Ineffective sorbents
Propane, various grades
Alcohol, n-Propyl alcohol,
1-Propanol, Ethylcarbinol
Isopropanol, IPA, Isopropyl alcohol, F(OV)
sec-Propyl alcohol
provides warning.
Propargyl alcohol
Propargyl bromide
Bromopropyne; Propyne, 3-bromo; OV
1-Bromo-2-propyne; 3-Bromopropyne,
warning properties
2-Propenoic Acid,
Isooctyl acrylate; IOA
Hydroacrylic acid, beta-lactone;
3-Hydroxypropionic acid;
Propiolactone; 3-Hydroxy-beta-
lactone; beta-Proprolactone; BPL
1-Propanal, Methylacetaldehyde, SA
service life.
Methylacetic acid, Ethylformic acid (F)OV
n-Propyl acetate
Propylacetate; Acetic acid,
Propene, Methylethene,
Methylethylene, 1-Propane,
Propylene dichloride
1,2-Dichloropropane
Propylene glycol
–Vapor and aerosol
1,2-Propanediol; 1,2-Dihydroxy-
(AIHAWEEL) propane; Methyl glycol
Propylene glycol
1,2-Propylene glycol dinitrate;
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Propylene glycol
1-Methoxy-2-propanol
monomethyl ether Propylene glycol
Glycol ether PM acetate;
Warning unknown.
monomethyl ether
(AIHAWEEL) PGMEA; 1-Methyoxy-2-
3M 3510 Monitor.
propanol acetate; 2-Methoxy-
1-methylethyl acetate;
2-Methylaziridine
1,2-Epoxypropane; Propene oxide; OV
Methyloxirane; 2,3-Epoxypropane;
1,2-Propylene oxide
n-Propyl nitrate
Nitric acid n-propylester
(See Methyl acetylene)
Azabenzene, Azine
(See Silica, crystalline)
Chinoline, Leukoline, 1-Benzazine, (F)OV
(AIHAWEEL) 1-Azana-phthalene, Lencol
m-Dihydroxybenzene;
preferable if heat is
–Insoluble compounds
–Soluble compounds
(See Naphtha [coal tar])
compounds (as Se)
Selenium hexafluoride 5
Warning unknown.
(See Silicon tetrahydride)
Silica, amorphous
–Diatomateous earth
0.80 mg/m3 Diatomite, Silicon dioxide
divided by %SiO2)
Silica, crystalline
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
-Respirable fraction
- Nonfibrous particles
(containing no asbestos
and <1% cystalline silica)
Inhalable particulate mass
Respirable particulate mass
(including whiskers)
Respirable fibers
Silicon tetrahydride
Silver, metal and soluble
compounds (as Ag)
Massive talc, Steatite, Soapstone N95
(respirable) silicate
–as Sodium azide
–as Hydrazoic acid
Warning unknown.
Sodium bisulfite
Sodium hydrogen sulfite
N95 alone suitable
if irritation eliminated
Sodium chloroacetate
2.5 mg/m3 Monoxone, Sodium
(AIHAWEEL) monofluoroacetate, Chloroacetic
acid, Sodium salt
Sodium fluoroacetate
0.05 mg/m3 1080, Sodium monofluoroacetate, N95
Sodium hydroxide
Caustic soda, Soda lye, Lye
Sodium hypochlorite
Hypochlorous acid, sodium salt;
(AIHAWEEL) Sodium oxychloride
Sodium metabisulfite
Sodium pyrosulfite
N95 alone suitable
if irritation eliminated
10 mg/m3* Corn starch
Aluminum stearate, Calcium
stearate, Glyceryl stearate, Lithium
stearate, Potassium stearate, Zinc
Hydrogen antimonide, Antimony
Warning unknown.
Stoddard solvent
Dry cleaning safety solvent,
Strontium chromate
0.0005 mg/m3 Strontium yellow,
C.I. pigment yellow 32
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Phenylethylene, Vinyl benzene,
Cinnamene, Styrene monomer
Proteolytic enzymes as 100%
Difficult to measure
crystalline enzyme
sampling data.
10 mg/m3* Table sugar, Saccharose
Irritation and taste
also provide warning
Sulfur hexafluoride
Warning unknown.
0.2 mg/m3 Hydrogen sulfate; Matting acid;
N95 with appropriate
Oil of vitriol; Sulphuric acid;
particulate mass)
Vitriol brown oil
irritation prevented
Sulfur monochloride
Sulfur chloride, Sulfur subchloride (F)AG
Sulfur pentafluoride
Disulfur decafluoride
Sulfur tetrafluoride
Sulfuryl fluoride
Warning unknown.
Synthetic vitreous fibers
–Continuous filament
–Glass wool fibers
–Refractory ceramic fibers
–Rock wool fibers
–Slag wool fibers
–Special purpose
glass fibersTalc (containing no
Hydrous magnesium silicate,
(respirable) Steatite talc, Non-fibrous talc,
Non-asbestiform talc
Talc (containing asbestos)
Tantalum, metal and
oxide dusts (as Ta)
compounds (as Te)Tellurium hexafluoride 1
Warning unknown.
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Terephthalic acid
p-Phthalic acid; TPA;
Benzene-p-dicarboxylic acid;
1,4 Benzenedicarboxylic acids,
o-Terphenyl, m-Terphenyl,
p-Terphenyl, Mixed terphenyls,
preferable if heat
Diphenyl benzenes
Acetylene tetrabromide,
(as inhalable fraction and vapor)
Muthmann's liquid,
Tetrabromoethane,
Tetrabromoethylene
1,1,1,2-Tetrachloro-
Refrigerant 112a; Halocarbon 112a; OV
2,2-difluoroethane
1,1,2,2-Tetrachloro-
Refrigerant 112, Halocarbon 112, OV
1,2-difluoroethane
1,1,2,2-Tetrachloro-
Acetylene tetrachloride
Tetrachloroethylene
(See Perchloroethylene)
Tetrachloromethane
(See Carbon tetrachloride)
Tetrachloronaphthalene
Halowax™, Seekay wax, Nibren
Pyridine, 2,3,5,6-tetrachloro
Tetrachlorosilane
Silicon tetrachloride, Silicon
Warning unknown.
Reacts rapidly with
moisture yielding
HCI and silica.
Tetraethylene glycol
TTEGDA; 2-Propionic acid, oxy-bis- OV/P95
(AIHAWEEL) (2,1-ethane-diyoxy-2,1-ethanediol)
Tetraethylene pentamine
1,2-Ethandiamine, N-(2-aminoethyl) F(OV)
-N'-(2-((2-amino)ethyl); Tetran 1,4,7,
(AIHAWEEL) 10,13-Pentaazatridecane;
DEH 26; TEPA; Tetraethyl pentamine
0.075 mg/m3 TEL, Lead tetraethyl, Motor fuel
anti-knock compound
Tetrafluoroethane, HFC134a,
Ineffective sorbents
(AIHAWEEL) HFA134a, Fluorocarbon 134a
Tetrafluoroethylene
Perfluoroethene; Perfluoroethylene; SA
TFE Tetrafluoroethene; 1,1,2,2-
Diethylene oxide, Tetramethylene OV
Tetrahydrofurfuryl
(AIHAWEEL) Tetrahydro-2-furancarbinol;
Tetrahydro-2 furylmethanol; THFA
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Tetrakis (hydroxymethyl)
Proban CC; Pyroset TKC; Retardol C; N95
phosphonium chloride
THPC; Tetrahydroxymethyl
phosphonium chloride
Tetrakis (hydroxymethyl)
Octakis (hydroxymethyl)
phosphonium sulfate
phosphonium sulfate; Pyroset TKO;
Retardol S; THPS; bis tetrakis-
(hydroxymethyl) phosphonium sulfate
Tetramethyl lead
0.075 mg/m3 TML, Lead tetramethyl, Motor fuel OV
anti-knock compound
succinonitrile, vapor
Tetranitromethane
1.5 mg/m3 2,4,6-Trinitrophenyl-
methylnitramine;
Nitramine; Tetralite
–Elemental and soluble 20 mg/m3
0.1 mg/m3 Thallium acetate, Thallium
compounds (as TI)
carbonate, Thallium hydroxide, etc.
10 mg/m3* 4,4'-Thiobis(3-methyl-6-tert-butyl N95
Thioglycolic acid
Mercaptoacetic acid, Thioranic
Thionyl chloride
Sulfurous oxychloride, Sulfur
Thiram (inhalable
0.05 mg/m3 TMT, TMTD,TMTDS,
fraction and vapor)
–Metal and inorganic
–Organic compounds
Titanium dioxide
10 mg/m3* Rutile, Anatase, Brookite
Titanium tetrachloride
0.5 mg/m3 Titanium chloride
Aantisal 1a; Methacide;
Methylbenzol; Methyl benzene;
Monomethyl benzene; Tol, Tolu-sol;
Toluol; Phenyl methane; Methyl benzene
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Diaminotoluene; TDA;
2,4 or 2,6-Toluene diisocyanate
2,6-diisocyanate
(or as a mixture)
p-Toluenesulfonyl
(F)OV/AG/N95 See Comment D,
chloride, Tosyl chloride
p-toluene sulfuric
acid produced by
o-Methylaniline;
Tributyl phosphate
Tri-n-butyl phosphate, TBP
Trichloroacetic acid
1,2,4-Trichlorobenzene
1,1,1-Trichloroethane
(See Methyl chloroform)
1,1,2-Trichloroethane
Vinyl trichloride,
Warning unknown.
b-Trichloroethane
3M 3510 Monitor.
Trichloroethylene
Ethylene trichloride, Triclene™,
Trichlorofluoromethane 10,000
FC-11, Freon® 11, Fluorotri-
Short OV service
chloromethane, Trichloromono-
Trichloronaphthalene
Halowax™, Seekay wax,
Trichloronitromethane
(See Chloropicrin)
1,2,3-Trichloropropane 1000
Allyl trichloride, Glycerol
trichlorohydrin, Glycerin
Silicochloroform
1,1,2-Trichloro-1,2,2-
Halocarbon 113, Refrigerant 113, SA
Short OV service
TTE, Freon® 113, FC-113
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
(See Silica, crystalline)
Daltogen; 2,2',2"-Nitrilo-
Warning unknown.
triethanol; Sterolamide; TEA;
Trihydroxytriethylamine
Silane, triethoxy
N-Trimethylamine; N,
AIHA WEEL is lower
(AIHAWEEL) N-Dimethylmethanamine; TMA
than TLV of 5 ppm.
AM suggested, not
specifically approved
Triethylene glycol
TREGDA; 2-Propenoic acid,
(AIHAWEEL) 2-ethanediyl-bis-(oxy-2,1-ethanediyl)
Triethylenetetramine
N,N'-bis(2-aminoethyl)-1,2,ethane OV
diamine; 1,4,7,10-Tetraazadecane;
page 8. R or P filter,
1,8-diamino-3,6-diazaoctane; 3,6-
if filter is required.
diazaoctane-1,8-diamine; Trientine;
Trifluorobromomethane 50,000
Halon™ 1301, Halocarbon 13B1,
Short OV service
Refrigerant 13B1,
Bromotrifluoromethane,
1,1,1-Trifluoro-2,2-
HCFC-123; FC-123;
Short OV service
Hydrofluorocarbon 123
1,1,1-Trifluoroethane
HFC-143a; FC-143a;
Ineffective sorbents
(AIHAWEEL) Hydrofluorocarbon 143a
2,2,2-Trifluoroethanol
Ethanol, 2,2,2-Trifluoro;
Warning unknown.
(AIHAWEEL) 2,2,2-Trifluoroethyl alcohol; TFE
1,3,5-Triglycidyl-s-
0.05 mg/m3 Araldite PT-810; TEPIC; 1,3,5-
Trimellitic anhydride
0.0005 mg/m3 TMA , TMAN, Anhydrotrimellitic
acid, Trimellitic acid anhydride
Trimethoxysilane
N-Trimethylamine;
AIHAWEEL is lower
(AIHAWEEL) N,N-Dimethylmethanamine; TMA
than TLV of 5 ppm.
AM not specifical y
Trimethyl benzene
Mesitylene, Pseudocumene,
Trimethylchlorosilane
Chlorotrimethylsilane;
trimethylchloro silicane;
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Trimethyl phosphite
Phosphorus acid trimethylester,
Trimethylolpropane
2-Propenoic acid, 2-ethyl-2(((1-
(AIHAWEEL) oxo-2-propenyl) oxy) methyl)-1,3-
propanediyl ester
Trimethylolpropane
Acrylic acid, triester w/2-ethyl
(AIHAWEEL) 2 (hydroxymethyl) 1,3 propanediol
2,4,6-Trinitrophenol
(See Picric acid)
2,4,6-Trinitrotoluene
0.1 mg/m3* TNT, Trinitrotoluol, Trinitrotoluene, OV/N95
sym-Trinitrotoluene
0.1 mg/m3 o-Tritolyl phosphate, TCP, TOCP
Triphenyl phosphate
Phenyl phosphate, TPP
OV/N95 preferable
(See Silica, crystalline)
Trisodium phosphate
TSP, Sodium o-phosphate
with appropriate
eye/face protection.
–Insoluble compounds
–Soluble compounds
Turpentine (wood)
Gumspirits, Turps, Wood
turpentine, Gum turpentine
Carbamide, Carbonyldiamide,
(AIHAWEEL) Carbonyldiamine, isourea
Pentanal, Valeric aldehyde
Vanadium pentoxide,
0.05 mg/m3* Vanadic anhydride,
respirable dust or
(respirable) Vanadium oxide
fume (as V2O5)Vegetable oil, mists
-Respirable fraction
1-Acetoxyethylene, Ethenyl acetate (F)OV
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
Warning unknown.
Short OV service
Chloroethylene, Chloroethene,
OSHA allows OV for
Monochloroethylene, VC, Vinyl
chloride monomer, VCM
CFR 1910.1017.
(See Acrylonitrile)
4-Vinylcyclohexene
4-Vinyl-1-cyclohexene;
4-Vinylcyclohexene-1-
butadiene dimer;
cyclohex-1-ene; VCH
Vinyl cyclohexene
Vinylcyclohexane dioxide,
Vinylhexane dioxide
Fluoroethene, Fluoroethylene,
Warning unknown.
Monofluoroethylene
Short service life.
Vinylidene chloride
1,1-Dichloroethylene; VDC
Vinylidene fluoride
1,1-Difluoroethene; 1,1-Difluoro-
Warning unknown.
ethylene; Ethene, 1,1-difluoro;
Ineffective sorbents.
Ethylene, 1,1-difluoro; Halocarbon
1132A; VDF; Vinylidene difluoride
N-Vinyl-2-pyrrolidone
Vinylbutyrlactam; Vinylpyrrolidinone;
1-Vinylpyrrolidinone; N-Vinylpyrrolidinone;
Methylstyrene, Tolyethylene
Vinyltrichlorosilane
Trichlorovinylsilane; Trichlorovinyl
silicon; Vinylsilicon trichloride; Silane
(AIHAWEEL) trichlorovinyl; Silane trichloroethenyl;
trichlorovinyl silicane
Varnish Makers' & Painters'
(All varieties except Western Red Cedar)
(Western Red Cedar)
Xylene (o-, m-, and
1,2-Dimethyl-benzene;
1,3-Dimethyl-benzene;
* TLV is lower than PEL.
NOTE: For explanation of column headings, refer to Format Explanation starting on page 3.
(to 10X OEL) Comments
m-Xylene a,a'-diamine
Aminodiymethyl benzene,
(as inhalable aerosol
Aminoxylene dimethylaniline,
Yttrium, metal and
Specific compound
compounds (as Y)Zinc chloride, fume
Zinc chromate (as Cr)
0.01 mg/m3* Basic zinc chromate, Zinc
potassium chromate, Zinc yellow
(Respirable particulate mass)
Zincite, Zinc white
10 mg/m3* Synpro stearate, Zinc distearate,
compounds (as Zr)
* TLV is lower than PEL.
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Data for this guide compiled
For More Information
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CLINICAL ASPECTS OF SALIVARY BIOLOGY FORTHE DENTAL CLINICIAN LAURENCE J. WALSH stimulated salivary flow rate to the prevention of dental caries Saliva performs a multiplicity of roles within the oral cavity, and dental erosion can be also explained by improved clearance and like many things in life, its importance is usually not of substrate due to more rapid movement of the salivary film,
International Electronic Journal of Medicine (IEJM) June 2014, Volume 3, Issue 1, Pages: 3-11 ISSN: 2251-8304 Original Article The Effect of High Fiber Diet on Sex Hormones in Early Pubertal Obese Girls; a Randomized Crossover Clinical Zeinab Piraloo 1, Sedighe Forouhari 2, Seyede Zahra Ghaemi 3, Parisa Rostambeigy 4, Zahra Mohammadi 5,6, Seyed Shojaeddin Namazi 7, Mostafa Mohammadi 8, Moosa Salehi 9 ,Azam Jokar 10, Najaf Zare 11, Sareh Roosta 1
