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MSDS Material Safety Data Sheet
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File Name: airgas_com---001104.asp
               Material Safety Data Sheet
Dimethyl Sulfide

Section 1. Chemical product and company identification
: Dimethyl Sulfide
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
: 001104
MSDS#
Date of : 6/29/2006.
Preparation/Revision
: 1-866-734-3438
In case of emergency

Section 2. Hazards identification
: Liquid. (COLORLESS TO LIGHT YELLOW LIQUID WITH AN UNPLEASANT ODOR)
Physical state
: Danger!
Emergency overview
HIGHLY FLAMMABLE LIQUID AND VAPOR.
CAUSES RESPIRATORY TRACT, EYE AND SKIN IRRITATION.
CAUSES DAMAGE TO THE FOLLOWING ORGANS: SKIN, EYE, LENS OR CORNEA,
NOSE, SINUSES, THROAT.
VAPOR MAY CAUSE FLASH FIRE.
Avoid contact with skin and clothing. Avoid breathing vapor or mist. Keep away from
heat, sparks and flame. Keep container closed. Use only with adequate ventilation.
Wash thoroughly after handling.
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 :
Irritating to respiratory system.
Inhalation :
Ingestion is not a normal route of exposure for gases
:
Ingestion
CARCINOGENIC EFFECTS Not available.
:
Potential chronic health :
MUTAGENIC EFFECTS Not available.
:
effects
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
Dimethyl Sulfide 75-18-3 100 ACGIH TLV (United States, 1/2004). Notes:
ACGIH 2004 Adoption
TWA: 10 ppm 8 hour(s). Form: All forms




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Dimethyl Sulfide


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 :
206掳C (402.8掳F)
Auto-ignition temperature :
Closed cup: -17.78掳C (0掳F).
Flash point :
Lower: 2.2% Upper: 20%
Flammable limits :
These products are carbon oxides (CO, CO 2), sulfur oxides (SO 2, SO3...).
Products of combustion :
In case of fire, use water spray (fog), foam, dry chemicals, or CO 2.
Fire fighting media and :
instructions
Not available.
Highly flammable liquid and vapor. Vapor may cause flash fire. Vapors may accumulate
in low or confined areas, travel considerable distance to source of ignition and flash
back. Runoff to sewer may create fire or explosion 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. Eliminate all ignition sources. Keep
Personal precautions
unnecessary personnel away. Use suitable protective equipment (Section 8). Do not
touch or walk through spilled material.
Environmental precautions : Avoid dispersal of spilled material and runoff and contact with soil, waterways, drains
and sewers.
: If emergency personnel are unavailable, contain spilled material. For small spills add
Methods for cleaning up
absorbent (soil may be used in the absence of other suitable materials) and use a non-
sparking or explosion proof means to transfer material to a sealed, appropriate container
for disposal. For large spills dike spilled material or otherwise contain material to ensure
runoff does not reach a waterway. Place spilled material in an appropriate container for
disposal.

Section 7. Handling and storage
: Avoid contact with eyes, skin and clothing. Keep container closed. Use only with
Handling
adequate ventilation. Avoid breathing vapor or mist. Keep away from heat, sparks and
flame. To avoid fire or explosion, dissipate static electricity during transfer by grounding
and bonding containers and equipment before transferring material. Use explosion-
proof electrical (ventilating, lighting and material handling) equipment. Wash thoroughly
after handling.
: Store in a segregated and approved area. Keep container in a cool, well-ventilated area.
Storage
Keep container tightly closed and sealed until ready for use. Avoid all possible sources
of ignition (spark or flame).


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Dimethyl Sulfide


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. 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.
Consult local authorities for acceptable exposure limits.

Section 9. Physical and chemical properties
62.14 g/mole
Molecular weight :
C2-H6-S
Molecular formula :
37.5掳C (99.5掳F)
Boiling/condensation point :
-93.3掳C (-135.9掳F)
Melting/freezing point :
228.9掳C (444掳F)
Critical temperature :
45.3 kPa (340 mm Hg) (at 20掳C)
Vapor pressure :
2.14 (Air = 1)
Vapor density :
Specific Volume (ft3/lb) 6.23441
:
Gas Density (lb/ft3) 0.1604
:

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

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))
Chronic effects on humans : Causes damage to the following organs: skin, eye, lens or cornea, nose/sinuses, throat.

: Not considered to be toxic for humans.
Other toxic effects on
humans
Specific effects
: No known significant effects or critical hazards.
Carcinogenic effects
: No known significant effects or critical hazards.
Mutagenic effects
: No known significant effects or critical hazards.
Reproduction toxicity
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Dimethyl Sulfide


Section 12. Ecological information
: These products are carbon oxides (CO, CO 2) and water, sulfur oxides (SO 2, SO3...).
Products of degradation
: The product itself and its products of degradation are not toxic.
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 UN1164 DIMETHYL SULFIDE 3 Not applicable (gas). Limited
quantity
FLAMMABLE LIQUID


Yes.
3




Packaging
instruction
Passenger
Aircraft
Quantity
limitation: 5 L

Cargo Aircraft
Quantity
limitation: 60 L

Special
provisions
IB1, T7, TP2
TDG Classification UN1164 DIMETHYL SULFIDE; 3 Not applicable (gas). Explosive
OR DIMETHYL Limit and
SULPHIDE Limited
3

Quantity
Index
1

Passenger
Carrying Ship
Index
Forbidden

Passenger
Carrying
Road or Rail
Index
5
UN1164 DIMETHYL SULFIDE 3 Not applicable (gas). -
Mexico
Classification FLAMMABLE LIQUID



3




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Dimethyl Sulfide


Section 15. Regulatory information
United States
: TSCA 8(b) inventory: dimethyl sulphide
U.S. Federal regulations
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: dimethyl sulphide
SARA 311/312 MSDS distribution - chemical inventory - hazard identification: dimethyl
sulphide: Fire hazard, Immediate (Acute) Health 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: No products were found.
Clean air act (CAA) 112 regulated flammable substances: No products were found.
Clean air act (CAA) 112 regulated toxic substances: No products were found.
: Pennsylvania RTK: dimethyl sulphide: (environmental hazard, generic environmental
State regulations
hazard)
Massachusetts RTK: dimethyl sulphide
New Jersey: dimethyl sulphide
Canada
: Class B-2: Flammable liquid with a flash point lower than 37.8掳C (100掳F).
WHMIS (Canada)
Class D-2B: Material causing other toxic effects (TOXIC).
CEPA DSL: dimethyl sulphide

Section 16. Other information
United States
: HIGHLY FLAMMABLE LIQUID AND VAPOR.
Label Requirements
CAUSES RESPIRATORY TRACT, EYE AND SKIN IRRITATION.
CAUSES DAMAGE TO THE FOLLOWING ORGANS: SKIN, EYE, LENS OR CORNEA,
NOSE, SINUSES, THROAT.
VAPOR MAY CAUSE FLASH FIRE.
Canada
: Class B-2: Flammable liquid with a flash point lower than 37.8掳C (100掳F).
Label Requirements
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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