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MSDS Material Safety Data Sheet
CAS

115-07-1 75-18-3 624-92-0

File Name: 115-07-1_75-18-3_624-92.asp

               Material Safety Data Sheet
Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene

Section 1. Chemical product and company identification
: Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene
Product Name
: 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
: 007244
MSDS#
Date of : 5/23/2007.
Preparation/Revision
: 1-866-734-3438
In case of emergency

Section 2. Hazards identification
: Gas.
Physical state
: Danger!
Emergency overview
MAY BE FATAL IF INHALED.
FLAMMABLE GAS.
CONTENTS UNDER PRESSURE.
CAUSES RESPIRATORY TRACT, EYE AND SKIN IRRITATION.
CONTAINS MATERIAL WHICH CAUSES DAMAGE TO THE FOLLOWING ORGANS:
SKIN, EYE, LENS OR CORNEA, NOSE, SINUSES, THROAT.
VAPOR MAY CAUSE FLASH FIRE.
POSSIBLE CANCER HAZARD
CONTAINS MATERIAL WHICH MAY CAUSE CANCER BASED ON ANIMAL DATA.
Avoid contact with skin and clothing. Do not breathe gas. Keep away from heat, sparks
and flame. Do not puncture or incinerate container. Keep container closed. Use only
with adequate ventilation. Wash thoroughly after handling. Risk of cancer depends on
duration and level of exposure.
Contact with rapidly expanding gases can cause frostbite.
: Inhalation,Dermal,Eyes
Routes of entry
Potential acute health effects
Irritating to eyes.
Eyes :
Irritating to skin.
Skin :
Very toxic by inhalation. Irritating to respiratory system.
Inhalation :
Ingestion is not a normal route of exposure for gases
:
Ingestion
CARCINOGENIC EFFECTS Classified A4 (Not classifiable for human or animal.) by
:
Potential chronic health :
ACGIH, 3 (Not classifiable for human.) by IARC [Propylene].
effects
MUTAGENIC EFFECTS Not available.
:
TERATOGENIC EFFECTS Not available.
:
: Acute or chronic respiratory conditions may be aggravated by overexposure to this gas.
Medical conditions
aggravated by overexposure
See toxicological Information (section 11)

Section 3. Composition, Information on Ingredients
Name CAS number % Volume Exposure limits




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Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene
Propylene 115-07-1 98 - 99 ACGIH TLV (United States, 1/2005).
TWA: 500 ppm 8 hour(s). Form: All forms
Dimethyl Sulfide 75-18-3 0.0001 - 1 ACGIH TLV (United States, 1/2004). Notes:
ACGIH 2004 Adoption
TWA: 10 ppm 8 hour(s). Form: All forms
Dimethyl Disulfide 624-92-0 0.0001 - 1 Sotsiaalminister (Estonia, 9/2001).
TWA: 1 ppm 8 hour(s). Form: All forms
NAOSH (Ireland, 3/2002).
OELV: 5 ppm 8 hour(s). Form: All forms
Del Lietuvos Higienos Normos (Lithuania,
12/2001).
TWA: 1 ppm 8 hour(s). Form: All forms
AFS (Sweden, 7/2000).
NGV: 1 ppm 8 hour(s). Form: All forms
NGV: 1 ppm 8 hour(s). Form: Total

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 immediately.
: In case of contact, immediately flush skin with plenty of water for at least 15 minutes
Skin contact
while removing contaminated clothing and shoes. Wash clothing before reuse.
Thoroughly clean shoes before reuse. Get medical attention immediately.
: 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
Flammable.
Flammability of the product :
The lowest known value is 454.85 to 459.85癈 (850.7 to 859.7癋) (Propylene).
Auto-ignition temperature :
The lowest known value is Closed cup: -108.15癈 (-162.7癋). (Propylene)
Flash point :
The greatest known range is Lower: 2.4% Upper: 11% (Propylene)
Flammable limits :
These products are carbon oxides (CO, CO 2), sulfur oxides (SO 2, SO3...).
Products of combustion :
Extremely flammable in presence of open flames, sparks and static discharge, of
Fire hazards in presence of :
oxidizing materials.
various substances
: In case of fire, use water spray (fog), foam, dry chemicals, or CO 2.
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.
Extremely flammable. Gas may accumulate in confined areas, travel considerable
distance to source of ignition and flash back causing fire or explosion.
: 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.


Build 1.1 Page: 2/6
Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene


Section 7. Handling and storage
: Avoid contact with eyes, skin and clothing. Keep container closed. Use only with
Handling
adequate ventilation. Keep away from heat, sparks and flame. To avoid fire, minimize
ignition sources. Use explosion-proof electrical (ventilating, lighting and material
handling) equipment. Do not puncture or incinerate container. Wash thoroughly after
handling. 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. Use process enclosures, local exhaust ventilation, or
Engineering controls
other engineering controls to keep airborne levels below recommended exposure limits.
The engineering controls also need to keep gas, vapor or dust concentrations below any
explosive limits. Use explosion-proof ventilation equipment.
Personal protection
: 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 : Full chemical resistant suit and self-contained breathing apparatus only by trained and
authorized persons.
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 :
-185癈 (-301癋) based on data for: Propylene.
Melting/freezing point :
The lowest known value is 91.9癈 (197.4癋) (Propylene).
Critical temperature :
The highest known value is 1.4 (Air = 1) (Propylene).
Vapor density :
Specific Volume (ft3/lb) Not applicable.
:
Gas Density (lb/ft3) Weighted average: 0.11
:

Section 10. Stability and reactivity
: The product is stable.
Stability and reactivity
Incompatibility with various : Highly reactive with oxidizing agents.
substances




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Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene


Section 11. Toxicological information
Ingredient name Test Result Route Species
Dimethyl Sulfide LD50 3300 mg/kg Oral Rat
LD50 3700 mg/kg Oral Mouse
LC50 40250 ppm (1 Inhalation Rat
hour(s))
Dimethyl Disulfide LC50 1600 ppm (1 Inhalation Rat
hour(s))
Chronic effects on humans : CARCINOGENIC EFFECTS Classified A4 (Not classifiable for human or animal.) by
:
ACGIH, 3 (Not classifiable for human.) by IARC [Propylene].
Contains material which causes damage to the following organs: skin, eye, lens or
cornea, nose/sinuses, throat.

: 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 may cause cancer based on animal data. Risk of cancer
Carcinogenic effects
depends on duration and 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
: These products are carbon oxides (CO, CO 2) and water, sulfur oxides (SO 2, SO3...).
Products of degradation
: The products of degradation are less toxic than the product itself.
Toxicity of the products of
biodegradation
: Not available.
Environmental fate
: No known significant effects or critical hazards.
Environmental hazards
: Not available.
Toxicity to the environment

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
Regulatory UN number Proper shipping Class Packing group Label Additional
information name information

DOT Classification UN1954 COMPRESSED GAS, 2.1 Not applicable (gas). -
FLAMMABLE, N.O.S. FLAMMABLE GAS


2




TDG Classification UN1954 COMPRESSED GAS, 2.1 Not applicable (gas). Explosive
FLAMMABLE, N.O.S. Limit and
Limited
2

Quantity
Index
0.125

ERAP Index
3000

Passenger
Carrying Ship
Index
Forbidden


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Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene
Passenger
Carrying
Road or Rail
Index
Forbidden
UN1954 COMPRESSED GAS, 2.1 Not applicable (gas). -
Mexico
FLAMMABLE, N.O.S.
Classification FLAMMABLE GAS


2




Section 15. Regulatory information
United States
: TSCA 8(a) CAIR: methyl disulfide
U.S. Federal regulations
TSCA 8(b) inventory: Propylene; dimethyl sulphide; methyl disulfide
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: Propylene; dimethyl sulphide; methyl
disulfide
SARA 311/312 MSDS distribution - chemical inventory - hazard identification: Propylene:
Fire hazard, Sudden Release of Pressure; dimethyl sulphide: Fire hazard, Immediate
(Acute) Health Hazard; methyl disulfide: Fire hazard
Clean Water Act (CWA) 307: No products were found.
Clean Water Act (CWA) 311: No products were found.
Clean air act (CAA) 112 accidental release prevention: Propylene
Clean air act (CAA) 112 regulated flammable substances: Propylene
Clean air act (CAA) 112 regulated toxic substances: No products were found.
SARA 313
Product name CAS number Concentration
: Propylene 115-07-1 98 - 99
Form R - Reporting
requirements
Supplier notification : Propylene 115-07-1 98 - 99
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.
: Pennsylvania RTK: Propylene: (environmental hazard, generic environmental hazard);
State regulations
dimethyl sulphide: (environmental hazard, generic environmental hazard); methyl
disulfide: (environmental hazard, generic environmental hazard)
Massachusetts RTK: Propylene; dimethyl sulphide; methyl disulfide
New Jersey: Propylene; dimethyl sulphide; methyl disulfide
Canada
: Class A: Compressed gas.
WHMIS (Canada)
Class D-1A: Material causing immediate and serious toxic effects (VERY TOXIC).
Class D-2B: Material causing other toxic effects (TOXIC).
CEPA DSL: Propylene; dimethyl sulphide; methyl disulfide

Section 16. Other information
United States
: MAY BE FATAL IF INHALED.
Label Requirements
FLAMMABLE GAS.
CONTENTS UNDER PRESSURE.
CAUSES RESPIRATORY TRACT, EYE AND SKIN IRRITATION.
CONTAINS MATERIAL WHICH CAUSES DAMAGE TO THE FOLLOWING ORGANS:
SKIN, EYE, LENS OR CORNEA, NOSE, SINUSES, THROAT.
VAPOR MAY CAUSE FLASH FIRE.
POSSIBLE CANCER HAZARD
CONTAINS MATERIAL WHICH MAY CAUSE CANCER BASED ON ANIMAL DATA.
Canada

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Flammable Gas Mixture: Dimethyl Disulfide / Dimethyl Sulfide / Propylene

: Class A: Compressed gas.
Label Requirements
Class D-1A: Material causing immediate and serious toxic effects (VERY TOXIC).
Class D-2B: Material causing other toxic effects (TOXIC).
*2
Hazardous Material : Health
Information System (U.S.A.)
4
Fire hazard
0
Reactivity
C
Personal protection

National Fire Protection :
Flammability
4
Association (U.S.A.)
2 0
Health Instability
Special


Notice to reader
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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