Material Safety Data Sheet
Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl
Acetate / Methyl Bromide / Nitrogen
Section 1. Chemical product and company identification
: Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate /
Product Name
Methyl Bromide / Nitrogen
: AIRGAS INC., on behalf of its subsidiaries
Supplier
259 North Radnor-Chester Road
Suite 100
Radnor, PA 19087-5283
1-610-687-5253
: Synthetic/Analytical chemistry.
Product use
: 006834
MSDS#
Date of : 1/30/2007.
Preparation/Revision
: 1-866-734-3438
In case of emergency
Section 2. Hazards identification
: Gas.
Physical state
: Warning!
Emergency overview
CANCER HAZARD
CONTAINS MATERIAL WHICH CAN CAUSE CANCER
CONTENTS UNDER PRESSURE.
HARMFUL IF INHALED.
CONTAINS MATERIAL WHICH CAUSES DAMAGE TO THE FOLLOWING ORGANS:
BLOOD, LUNGS, CARDIOVASCULAR SYSTEM, RESPIRATORY TRACT, SKIN,
CENTRAL NERVOUS SYSTEM, EYE, LENS OR CORNEA.
Avoid breathing gas. Do not puncture or incinerate container. Keep container closed.
Use only with adequate ventilation. Risk of cancer depends on duration and level of
exposure.
Contact with rapidly expanding gases can cause frostbite.
: Inhalation
Routes of entry
Potential acute health effects
Irritating to eyes.
Eyes :
Irritating to skin.
Skin :
Toxic by inhalation.
Inhalation :
Ingestion is not a normal route of exposure for gases
:
Ingestion
CARCINOGENIC EFFECTS Classified + (Proven.) by NIOSH [Methyl Bromide].
:
Potential chronic health :
Classified A4 (Not classifiable for human or animal.) by ACGIH, 3 (Not classifiable for
effects
human.) by IARC [Methyl Bromide]. Classified A1 (Confirmed for human.) by ACGIH, 1
(Proven for human.) by IARC, 1 (Known To Be Human Carcinogens.) by NTP, +
(Proven.) by OSHA, + (Proven.) by NIOSH, 1 (Proven for human.) by European Union
[Benzene].
MUTAGENIC EFFECTS Classified 3 by European Union [Methyl Bromide].
:
TERATOGENIC EFFECTS Not available.
:
: Repeated exposure to a highly toxic material may produce general deterioration of health
Medical conditions
aggravated by overexposure by an accumulation in one or many human organs.
See toxicological Information (section 11)
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
Section 3. Composition, Information on Ingredients
Name CAS number % Volume Exposure limits
Nitrogen 7727-37-9 95 - 99
Carbon Monoxide 630-08-0 0.0025 - 1 ACGIH TLV (United States, 1/2005). Notes:
Substances for which there is a Biological
Exposure Index or Indices
TWA: 29 mg/m 3 8 hour(s). Form: All forms
TWA: 25 ppm 8 hour(s). Form: All forms
NIOSH REL (United States, 12/2001).
CEIL: 229 mg/m 3 Form: All forms
CEIL: 200 ppm Form: All forms
TWA: 40 mg/m 3 10 hour(s). Form: All forms
TWA: 35 ppm 10 hour(s). Form: All forms
OSHA PEL (United States, 8/1997).
TWA: 55 mg/m 3 8 hour(s). Form: All forms
TWA: 50 ppm 8 hour(s). Form: All forms
Methane 74-82-8 0.1 - 1 ACGIH TLV (United States, 1/2004). Notes:
ACGIH 2004 Adoption
TWA: 1000 ppm 8 hour(s). Form: All forms
Methyl Acetate 79-20-9 0.02 - 1 ACGIH TLV (United States, 1/2005).
STEL: 757 mg/m 3 15 minute(s). Form: All
forms
STEL: 250 ppm 15 minute(s). Form: All
forms
TWA: 606 mg/m 3 8 hour(s). Form: All forms
TWA: 200 ppm 8 hour(s). Form: All forms
NIOSH REL (United States, 12/2001).
STEL: 760 mg/m 3 15 minute(s). Form: All
forms
STEL: 250 ppm 15 minute(s). Form: All
forms
TWA: 610 mg/m 3 10 hour(s). Form: All forms
TWA: 200 ppm 10 hour(s). Form: All forms
OSHA PEL (United States, 8/1997).
TWA: 610 mg/m 3 8 hour(s). Form: All forms
TWA: 200 ppm 8 hour(s). Form: All forms
Methyl Bromide 74-83-9 0.0001 - 0.9 ACGIH TLV (United States, 5/2004). Skin
TWA: 3.9 mg/m 3 8 hour(s). Form: All forms
TWA: 1 ppm 8 hour(s). Form: All forms
OSHA PEL (United States, 6/1993). Skin
CEIL: 80 mg/m 3 Form: All forms
CEIL: 20 ppm Form: All forms
Benzene 71-43-2 0.00005 - 0.9 ACGIH TLV (United States, 5/2004). Skin
STEL: 8 mg/m 3 15 minute(s). Form: All
forms
STEL: 2.5 ppm 15 minute(s). Form: All
forms
TWA: 1.6 mg/m 3 8 hour(s). Form: All forms
TWA: 0.5 ppm 8 hour(s). Form: All forms
NIOSH REL (United States, 6/2001). Notes:
See Appendix A - NIOSH Potential
Occupational Carcinogen
STEL: 1 ppm 15 minute(s). Form: All forms
TWA: 0.1 ppm 10 hour(s). Form: All forms
OSHA PEL (United States, 6/1993).
STEL: 5 ppm 15 minute(s). Form: All forms
TWA: 1 ppm 8 hour(s). Form: All forms
OSHA PEL Z2 (United States, 6/2002).
AMP: 50 ppm 10 minute(s). Form: All forms
CEIL: 25 ppm Form: All forms
TWA: 10 ppm 8 hour(s). Form: All forms
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
Section 4. First aid measures
No action shall be taken involving any personal risk or without suitable training.If fumes are still suspected to be present,
the rescuer should wear an appropriate mask or a self-contained breathing apparatus.It may be dangerous to the person
providing aid to give mouth-to-mouth resuscitation.
: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes.
Eye contact
Get medical attention if irritation occurs.
: In case of contact, immediately flush skin with plenty of water. Remove contaminated
Skin contact
clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse.
Get medical attention.
: Try to warm up the frozen tissues and seek medical attention.
Frostbite
: If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is
Inhalation
difficult, give oxygen. Get medical attention immediately.
: Do NOT induce vomiting unless directed to do so by medical personnel. Never give
Ingestion
anything by mouth to an unconscious person. Get medical attention if symptoms
appear.
Section 5. Fire fighting measures
Non-flammable.
Flammability of the product :
The lowest known value is 539.85癈 (1003.7癋) (Methane).
Auto-ignition temperature :
The lowest known value is Closed cup: -188.15癈 (-306.7癋). (Methane)
Flash point :
These products are carbon oxides (CO, CO 2), nitrogen oxides (NO, NO 2...).
Products of combustion :
Use an extinguishing agent suitable for surrounding fires.
Fire fighting media and :
instructions
If involved in fire, shut off flow immediately if it can be done without risk. Apply water
from a safe distance to cool container and protect surrounding area.
No specific hazard.
: Fire fighters should wear appropriate protective equipment and self-contained breathing
Special protective
apparatus (SCBA) with a full facepiece operated in positive pressure mode.
equipment for fire-fighters
Section 6. Accidental release measures
: Immediately contact emergency personnel. Keep unnecessary personnel away. Use
Personal precautions
suitable protective equipment (Section 8). Shut off gas supply if this can be done safely.
Isolate area until gas has dispersed.
Environmental precautions : Avoid dispersal of spilled material and runoff and contact with soil, waterways, drains
and sewers.
Section 7. Handling and storage
: Keep container closed. Use only with adequate ventilation. Do not puncture or
Handling
incinerate container. High pressure gas. Use equipment rated for cylinder pressure.
Close valve after each use and when empty. Protect cylinders from physical damage; do
not drag, roll, slide, or drop. Use a suitable hand truck for cylinder movement.
: Keep container tightly closed. Keep container in a cool, well-ventilated area. Cylinders
Storage
should be stored upright, with valve protection cap in place, and firmly secured to
prevent falling or being knocked over. Cylinder temperatures should not exceed 52 癈
(125 癋).
Section 8. Exposure Controls, Personal Protection
: Use only with adequate ventilation. If user operations generate dust, fumes, vapor or
Engineering controls
mist, use process enclosures, local exhaust ventilation, or other engineering controls to
keep worker exposure to airborne contaminants below any recommended or statutory
limits.
Personal protection
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
: Safety eyewear complying with an approved standard should be used when a risk
Eyes
assessment indicates this is necessary to avoid exposure to liquid splashes, mists or
dusts.
: Personal protective equipment for the body should be selected based on the task being
Skin
performed and the risks involved and should be approved by a specialist before handling
this product.
: Use a properly fitted, air-purifying or air-fed respirator complying with an approved
Respiratory
standard if a risk assessment indicates this is necessary.Respirator selection must be
based on known or anticipated exposure levels, the hazards of the product and the safe
working limits of the selected respirator.
The applicable standards are (US) 29 CFR 1910.134 and (Canada) Z94.4-93
: Chemical-resistant, impervious gloves or gauntlets complying with an approved standard
Hands
should be worn at all times when handling chemical products if a risk assessment
indicates this is necessary.
Personal protection in case : A self-contained breathing apparatus should be used to avoid inhalation of the product.
of a large spill
Consult local authorities for acceptable exposure limits.
Section 9. Physical and chemical properties
Not applicable.
Molecular weight :
Not applicable.
Molecular formula :
Not available.
Boiling/condensation point :
-182.6癈 (-296.7癋) based on data for: Methane. Weighted average: -209.61癈
Melting/freezing point :
(-345.3癋)
The lowest known value is -146.9癈 (-232.4癋) (Nitrogen).
Critical temperature :
The highest known value is 0.97 (Air = 1) (Carbon monoxide). Weighted average: 0.96
Vapor density :
(Air = 1)
Not applicable.
Specific Volume (ft3/lb) :
Weighted average: 0.07
Gas Density (lb/ft3) :
Section 10. Stability and reactivity
: The product is stable.
Stability and reactivity
Incompatibility with various : Not considered to be reactive according to our database.
substances
Section 11. Toxicological information
Ingredient name Test Result Route Species
Carbon Monoxide LC50 3760 ppm (1 Inhalation Rat
hour(s))
LC50 2444 ppm (4 Inhalation Mouse
hour(s))
Methyl Acetate LD50 3705 mg/kg Oral Rabbit
Methyl Bromide LD50 214 mg/kg Oral Rat
LDLo 500 mg/kg Oral Dog
LC50 850 ppm (1 hour Inhalation Rat
(s))
LC50 1540 mg/m 3 (2 Inhalation Mouse
hour(s))
Benzene LD50 930 mg/kg Oral Rat
LD50 4700 mg/kg Oral Mouse
LD50 5700 mg/kg Oral Mammal
LD50 48 mg/kg Dermal Mouse
LDLo 50 mg/kg Oral man
LC50 10000 ppm (7 Inhalation Rat
hour(s))
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
Chronic effects on humans : CARCINOGENIC EFFECTS Classified + (Proven.) by NIOSH [Methyl Bromide].
:
Classified A4 (Not classifiable for human or animal.) by ACGIH, 3 (Not classifiable for
human.) by IARC [Methyl Bromide]. Classified A1 (Confirmed for human.) by ACGIH, 1
(Proven for human.) by IARC, 1 (Known To Be Human Carcinogens.) by NTP, +
(Proven.) by OSHA, + (Proven.) by NIOSH, 1 (Proven for human.) by European Union
[Benzene].
MUTAGENIC EFFECTS Classified 3 by European Union [Methyl Bromide].
:
Contains material which causes damage to the following organs: blood, lungs,
cardiovascular system, upper respiratory tract, skin, central nervous system (CNS), eye,
lens or cornea.
: No specific information is available in our database regarding the other toxic effects of
Other toxic effects on
this material for humans.
humans
Specific effects
: Contains material which can cause cancer. Risk of cancer depends on duration and
Carcinogenic effects
level of exposure.
: No known significant effects or critical hazards.
Mutagenic effects
: No known significant effects or critical hazards.
Reproduction toxicity
Section 12. Ecological information
Ingredient name Species Period Result
Methyl Acetate Pimephales promelas (EC50) 48 hour(s) 400 mg/l
Pimephales promelas (LC50) 96 hour(s) 320 mg/l
Pimephales promelas (LC50) 96 hour(s) 399 mg/l
Pimephales promelas (LC50) 96 hour(s) 408 mg/l
Methyl Bromide Poecilia reticulata (EC50) 48 hour(s) 0.0008 mg/l
Poecilia reticulata (EC50) 48 hour(s) 0.5 mg/l
Oryzias latipes (EC50) 48 hour(s) 0.5 mg/l
Poecilia reticulata (LC50) 96 hour(s) 0.0008 mg/l
Oryzias latipes (LC50) 96 hour(s) 0.7 mg/l
Lepomis macrochirus (LC50) 96 hour(s) 11 mg/l
Benzene Daphnia magna (EC50) 48 hour(s) 9.23 mg/l
Daphnia magna (EC50) 48 hour(s) 10 mg/l
Daphnia magna (EC50) 48 hour(s) 11.73 mg/l
Oncorhynchus mykiss (LC50) 96 hour(s) 5.3 mg/l
Oncorhynchus mykiss (LC50) 96 hour(s) 5.9 mg/l
Oncorhynchus mykiss (LC50) 96 hour(s) 9.2 mg/l
: These products are carbon oxides (CO, CO 2) and water, nitrogen oxides (NO, NO 2...).
Products of degradation
: The products of degradation are as toxic as the product itself.
Toxicity of the products of
biodegradation
: Not available.
Environmental fate
: Practically non-toxic to aquatic organisms.
Environmental hazards
Toxicity to the environment : Not available.
Section 13. Disposal considerations
Product removed from the cylinder must be disposed of in accordance with appropriate Federal, State, local
regulation.Return cylinders with residual product to Airgas, Inc.Do not dispose of locally.
Section 14. Transport information
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
Regulatory UN number Proper shipping Class Packing group Label Additional
information name information
DOT Classification UN1956 COMPRESSED GAS, 2.2 Not applicable (gas). -
N.O.S. NON-FLAMMABLE GAS
2
TDG Classification UN1956 COMPRESSED GAS, 2.2 Not applicable (gas). Explosive
N.O.S. Limit and
Limited
2
Quantity
Index
0.125
Passenger
Carrying
Road or Rail
Index
75
UN1956 COMPRESSED GAS, 2.2 Not applicable (gas). -
Mexico
N.O.S.
Classification NON-FLAMMABLE GAS
2
Section 15. Regulatory information
United States
: TSCA 4(a) final test rules: methyl acetate
U.S. Federal regulations
TSCA 8(a) PAIR: methyl acetate
TSCA 8(b) inventory: Nitrogen; Carbon monoxide; Methane; methyl acetate; Methyl
Bromide; Benzene
TSCA 12(b) one time export: methyl acetate
SARA 302/304/311/312 extremely hazardous substances: No products were found.
SARA 302/304 emergency planning and notification: No products were found.
SARA 302/304/311/312 hazardous chemicals: Nitrogen; Carbon monoxide; Methane;
methyl acetate
SARA 311/312 MSDS distribution - chemical inventory - hazard identification: Nitrogen:
Sudden Release of Pressure; Carbon monoxide: Fire hazard, Sudden Release of
Pressure, Immediate (Acute) Health Hazard, Delayed (Chronic) Health Hazard;
Methane: Fire hazard, Sudden Release of Pressure; methyl acetate: Fire hazard,
Immediate (Acute) Health Hazard, Delayed (Chronic) Health Hazard
Clean Water Act (CWA) 307: Methyl Bromide; Benzene
Clean Water Act (CWA) 311: Benzene
Clean air act (CAA) 112 accidental release prevention: Methane
Clean air act (CAA) 112 regulated flammable substances: Methane
Clean air act (CAA) 112 regulated toxic substances: No products were found.
SARA 313
Product name CAS number Concentration
: Benzene 71-43-2 0.00005 - 0.9
Form R - Reporting
requirements
: Benzene 71-43-2 0.00005 - 0.9
Supplier notification
SARA 313 notifications must not be detached from the MSDS and any copying and redistribution of the MSDS shall
include copying and redistribution of the notice attached to copies of the MSDS subsequently redistributed.
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
: Pennsylvania RTK: Nitrogen: (generic environmental hazard); Carbon monoxide:
State regulations
(environmental hazard, generic environmental hazard); Methane: (generic environmental
hazard); methyl acetate: (generic environmental hazard); Methyl Bromide:
(environmental hazard, generic environmental hazard); Benzene: (special hazard,
environmental hazard, generic environmental hazard)
Massachusetts RTK: Nitrogen; Carbon monoxide; Methane; methyl acetate; Methyl
Bromide; Benzene
New Jersey: Nitrogen; Carbon monoxide; Methane; methyl acetate; Methyl Bromide;
Benzene
: WARNING: This product contains a chemical known to the State of California to cause
California prop. 65
cancer and birth defects or other reproductive harm.
Ingredient name Cancer Reproductive No significant risk Maximum
level acceptable dosage
level
Carbon Monoxide No. Yes. No. No.
Methyl Bromide No. Yes. No. Yes.
Benzene Yes. Yes. 6.4 g/day (ingestion) Yes.
13 g/day (inhalation)
Canada
: Class A: Compressed gas.
WHMIS (Canada)
Class D-1A: Material causing immediate and serious toxic effects (VERY TOXIC).
Class D-2A: Material causing other toxic effects (VERY TOXIC).
Class D-2B: Material causing other toxic effects (TOXIC).
CEPA DSL: Nitrogen; Carbon monoxide; Methane; methyl acetate; Methyl Bromide;
Benzene
Section 16. Other information
United States
: CANCER HAZARD
Label Requirements
CONTAINS MATERIAL WHICH CAN CAUSE CANCER
CONTENTS UNDER PRESSURE.
HARMFUL IF INHALED.
CONTAINS MATERIAL WHICH CAUSES DAMAGE TO THE FOLLOWING ORGANS:
BLOOD, LUNGS, CARDIOVASCULAR SYSTEM, RESPIRATORY TRACT, SKIN,
CENTRAL NERVOUS SYSTEM, EYE, LENS OR CORNEA.
Canada
: Class A: Compressed gas.
Label Requirements
Class D-1A: Material causing immediate and serious toxic effects (VERY TOXIC).
Class D-2A: Material causing other toxic effects (VERY TOXIC).
Class D-2B: Material causing other toxic effects (TOXIC).
*2
Hazardous Material : Health
Information System (U.S.A.)
0
Fire hazard
0
Reactivity
C
Personal protection
National Fire Protection :
Flammability
0
Association (U.S.A.)
2 0
Health Instability
Special
Notice to reader
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Nonflammable Gas Mixture: Benzene / Carbon Monoxide / Methane / Methyl Acetate / Methyl Bromide / Nitrogen
To the best of our knowledge, the information contained herein is accurate. However, neither the above named
supplier nor any of its subsidiaries assumes any liability whatsoever for the accuracy or completeness of the
information contained herein.
Final determination of suitability of any material is the sole responsibility of the user. All materials may present
unknown hazards and should be used with caution. Although certain hazards are described herein, we cannot
guarantee that these are the only hazards that exist.
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