DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
1 PRODUCT AND COMPANY IDENTIFICATION
EMERGENCY PHONE NUMBERS:
Thio and Fine Chemicals
Chemtrec: (800) 424-9300 (24hrs) or (703) 527-3887
Arkema Inc.
Medical: Rocky Mountain Poison Control Center
2000 Market Street
(866) 767-5089 (24Hrs)
Philadelphia, PA 19103
Information Telephone Numbers Phone Number Available Hrs
Customer Service 1-800-628-4453 8:30 to 5:30 EST
Product Name DIMETHYL SULFIDE
Product Synonym(s) DMS
Chemical Family Alkyl Sulfide
Chemical Formula C2H6S
Chemical Name Methane, thiobis -
EPA Reg Num
Product Use Sulfiding
2 COMPOSITION / INFORMATION ON INGREDIENTS
Ingredient Name CAS RegistryNumber Typical Wt. % OSHA
Dimethyl sulfide 75-18-3 99% Y
Methyl mercaptan 74-93-1 <0.2% Y
The substance(s) marked with a "Y" in the OSHA column, are identified as hazardous chemicals according to the
criteria of the OSHA Hazard Communication Standard (29 CFR 1910.1200)
This material is classified as hazardous under Federal OSHA regulation.
The components of this product are all on the TSCA Inventory list.
3 HAZARDS IDENTIFICATION
Emergency Overview
Clear liquid, unpleasant odor
DANGER!
EXTREMELY FLAMMABLE LIQUID AND VAPOR. VAPOR MAY CAUSE FLASH FIRE.
CAUSES EYE IRRITATION.
MAY CAUSE RESPIRATORY TRACT IRRITATION.
MAY BE HARMFUL IF SWALLOWED.
Potential Health Effects
Inhalation and skin contact are expected to be the primary routes of occupational exposure to this material. Based on
single exposure animal tests, it is considered to be slightly toxic if swallowed, practically non-toxic if absorbed through
skin or inhaled, severely irritating to eyes and slightly to moderately irritating to skin. This material has a strong garlic-
like odor that may cause headache, nausea and irritation to the eyes and respiratory tract. Exposure to very high
concentrations in a confined space has caused death, possibly due to lack of oxygen. Workers may become tolerant to
the odor in a relatively short period of time. The odor threshold is approximately 1 part per billion (ppb).
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Revision: 7 Issued: 11 OCT 2004 of 7
DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
4 FIRST AID MEASURES
IF IN EYES, immediately flush with plenty of water for at least 15 minutes. Get medical attention immediately.
IF ON SKIN, immediately flush with plenty of water. Remove contaminated clothing and shoes. Get medical
attention. Wash clothing before reuse. Destroy contaminated shoes.
IF SWALLOWED, do NOT induce vomiting. Give water to drink. Get medical attention immediately. NEVER
GIVE ANYTHING BY MOUTH TO AN UNCONSCIOUS PERSON.
IF INHALED, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give
oxygen. Get medical attention.
5 FIRE FIGHTING MEASURES
Fire and Explosive Properties
Auto-Ignition Temperature 205 C (401 F)
Flash Point <0 F Flash Point Method TCC
Flammable Limits- Upper 19.7
2.2
Lower
Extinguishing Media
Use water spray, carbon dioxide, foam or dry chemical.
Fire Fighting Instructions
Use water spray to cool containers exposed to fire. Contain run-off from fire. Fire fighters and others who may
be exposed to products of combustion should wear full fire fighting turn out gear (full Bunker Gear) and self-
contained breathing apparatus (pressure demand NIOSH approved or equivalent). Fire fighting equipment
should be thoroughly decontaminated after use
Fire and Explosion Hazards
When burned, the following hazardous products of combustion can occur:
Oxides of carbon
Sulfur oxides
Hydrogen sulfide
6 ACCIDENTAL RELEASE MEASURES
In Case of Spill or Leak
Ventilate the area. Contain spill by building a dike using absorbent material. Consult with environmental
engineer or professional to determine if neutralization is appropriate and for handling procedures for residual
materials. Do not use solid bleach for neutralization, as fire or violent reaction can occur. Collect the liquid
and solid absorbent into a drum approved for waste disposal. Flush area with water. Consult a regulatory
specialist to determine appropriate state or local reporting requirements, for assistance in waste
characterization and/or hazardous waste disposal and other requirements listed in pertinent environmental
permits.
7 HANDLING AND STORAGE
Handling
Keep away from heat, sparks and flame.
Keep container closed.
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DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
7 HANDLING AND STORAGE
Use only with adequate ventilation.
Do not get in eyes, on skin or on clothing.
Avoid breathing mist.
Wash thoroughly after handling.
Do not taste or swallow.
CONTAINER HAZARDOUS WHEN EMPTY. Emptied container retains vapor and product residue. Follow
labeled warnings even after container is emptied. RESIDUAL VAPORS MAY EXPLODE ON IGNITION. DO
NOT CUT, DRILL GRIND OR WELD ON OR NEAR THIS CONTAINER. Improper disposal or reuse of this
container may be dangerous and/or illegal.
Storage
Store in well ventilated area away from heat and sources of ignition such as flame, sparks and static
electricity. Ensure that all storage and handling equipment is properly rated, grounded and installed to satisfy
electrical classification requirements. Static electricity may accumulate and create a fire hazard. All storage
containers, including containers such as drums, cylinders and IBC鈥檚, must be bonded and grounded during
filling and emptying operations. Store away from oxidizers and reactive materials. Keep container tightly
closed. Observe all federal, state and local regulations and National Fire Protection Association (NFPA)
Codes which pertain to the specific local conditions of storage and use, including OSHA 29 CFR 1910.106
and NFPA 30, 70, 77, and 497.
8 EXPOSURE CONTROLS / PERSONAL PROTECTION
Engineering Controls
Investigate engineering techniques to reduce exposures below airborne exposure limits. Provide ventilation
if necessary to control exposure levels below airborne exposure limits (see below). If practical, use local
mechanical exhaust ventilation at sources of air contamination such as open process equipment. Consult
ACGIH ventilation manual or NFPA Standard 91 for design of exhaust systems.
Eye / Face Protection
Where there is potential for eye contact, wear chemical goggles and have eye flushing equipment
immediately available.
Skin Protection
Wear appropriate chemical resistant protective clothing and chemical resistant gloves to prevent skin
contact. Consult glove manufacturer to determine appropriate type glove material for given application.
Wear chemical goggles, a face shield, and chemical resistant clothing such as a rubber apron when
splashing may occur. Rinse immediately if skin is contaminated. Remove contaminated clothing promptly
and wash before reuse. Clean protective equipment before reuse. Provide a safety shower at any location
where skin contact can occur. Wash skin thoroughly after handling.
Respiratory Protection
Avoid breathing vapor or mist. When airborne exposure limits are exceeded (see below), use NIOSH
approved respiratory protection equipment appropriate to the material and/or its components. Consult
respirator manufacturer to determine appropriate type equipment for given application. Observe respirator
use limitations specified by NIOSH or the manufacturer. For emergency and other conditions where
exposure limit may be significantly exceeded, use an approved full face positive-pressure, self-contained
breathing apparatus or positive-pressure airline with auxiliary self-contained air supply. Respiratory
protection programs must comply with 29 CFR 搂 1910.134.
Airborne Exposure Guidelines for Ingredients
Exposure Limit Value
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DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
Methyl mercaptan
ACGIH TWA - 0.5 ppm 0.98 mg/m3
OSHA Ceiling PEL - 10 ppm 20 mg/m3
Dimethyl sulfide
ACGIH TWA - 10 ppm
-Only those components with exposure limits are printed in this section.
-Skin contact limits designated with a "Y" above have skin contact effect. Air sampling alone is insufficient to accurately quantitate
exposure. Measures to prevent significant cutaneous absorption may be required.
-ACGIH Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic reactions.
-WEEL-AIHA Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic skin reactions.
9 PHYSICAL AND CHEMICAL PROPERTIES
Clear liquid, unpleasant odor
Appearance/Odor
pH NE
Specific Gravity 0.854 @ 15.5 C
Vapor Pressure 7.5 psia
Vapor Density 2.14
Melting Point NA
Freezing Point -98 C (-144.4 F)
Boiling Point 36-39.3 C (97-103 F)
Solubility In Water Slightly soluble
Solubility in Other Materials Alcohols, ethyl ether
Evaporation Rate NE
Percent Volatile 100
Viscosity 0.28 cP @ 20 C
Molecular Weight 62.13
n-Octanol/Water Partition Coefficient log Pow = 0.87
Other Physical Data Critical pressure: 53.5 bar
Critcal temperature: 229 C
Olfactory threshold: 2.5 ppb
Refractive index: 1.435 @ 20 C
Henry鈥檚 constant: 170 Pa m3/mole
10 STABILITY AND REACTIVITY
Stability
This material is chemically stable under normal and anticipated storage and handling conditions.
Incompatibility
Contact with combustible materials may enhance risk of fire. Alkali, Acid, solid bleach (strong oxidizer) may
cause violent reaction and fire.
Hazardous Decomposition Products
Thermal decomposition giving toxic and flammable products.
11 TOXICOLOGICAL INFORMATION
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DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
11 TOXICOLOGICAL INFORMATION
Toxicological Information
Data on this material and/or its components are summarized below.
Single exposure (acute) studies indicate:
Oral - Slightly Toxic to Rats and Mice (LD50 535-3,700 mg/kg)
Dermal - Practically Non-toxic to Rabbit (LD50 >5000 mg/kg)
Inhalation - Practically Non-toxic to Rats (4-hr LC50 40,250 ppm)
Eye Irritation - Severely Irritating to Rabbits
Skin Irritation - Slightly to Moderately Irritating to Rabbits (24-hr exposure)
No skin allergy was observed in humans following repeated exposure. Administration in the drinking water of
rabbits produced increased lung weights and gross changes suggestive of effects in lungs and kidneys.
Repeated oral administration to rats and rabbits resulted in effects on the blood, lungs and kidney and some
organ weight changes. No genetic changes were observed in tests using bacteria, animal cells or animals.
12 ECOLOGICAL INFORMATION
Ecotoxicological Information
Data on this material and/or its components are summarized below.
This material is slightly toxic to Daphnia magna (48-hr LC50 29 mg/l). It is practically non-toxic to algae (96-hr
EC50 23 mg/l) and rainbow trout (96-hr LC50 213 mg/l).
Chemical Fate Information
No data are available.
13 DISPOSAL CONSIDERATIONS
Waste Disposal
Incineration is the recommended method for disposal observing all local, state and federal regulations. Note:
Chemical additions to, processing of, or otherwise altering this material may make this waste management
information incomplete, inaccurate, or otherwise inappropriate. Furthermore, state and local waste disposal
requirements may be more restrictive or otherwise different from federal laws and regulations.
14 TRANSPORT INFORMATION
DOT Name Dimethyl Sulfide
DOT Technical Name
DOT Hazard Class 3
UN Number UN1164
DOT Packing Group PG ll
RQ
15 REGULATORY INFORMATION
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DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
Hazard Categories Under Criteria of SARA Title III Rules (40 CFR Part 370)
Immediate (Acute) Health Y Fire Y
Delayed (Chronic) Health N Reactive N
Sudden Release of Pressure N
The components of this product are all on the TSCA Inventory list.
Ingredient Related Regulatory Information:
CERCLA RQ SARA TPQ
SARA Reportable Quantities
Methyl mercaptan 100 LBS 500 LBS
Dimethyl sulfide NE NE
SARA Title III, Section 302
This product does contain chemical(s), as indicated below, currently on the Extremly Hazardous Substance List, Section 302, SARA Title
III. See Section 2 for further details regarding concentrations and registry numbers.
Methyl mercaptan
Massachusetts Right to Know
This product does contain the following chemicals(s), as indicated below, currently on the Massachusetts Right to Know Substance
List.
Dimethyl sulfide
Methyl mercaptan
New Jersey Right to Know
This product does contain the following chemical(s), as indicated below, currently on the New Jersey Right-to-Know Substances List.
Dimethyl sulfide
Methyl mercaptan
Pennsylvania Environmental Hazard
This product does contain the following chemical(s), as indicated below, currently on the Pennsylvania Environmental Hazard List.
Dimethyl sulfide
Methyl mercaptan
Pennsylvania Right to Know
This product does contain the following chemical(s), as indicated below, currently on the Pennsylvania Hazardous Substance List.
Dimethyl sulfide
Methyl mercaptan
16 OTHER INFORMATION
Revision Information
Revision Number 7
11 OCT 2004
Revision Date
Supercedes Revision Dated 02-MAR-2004
Revision Summary
ATOFINA Chemicals, Inc. has changed its name to Arkema Inc.
Key
NE= Not Established NA= Not Applicable (R) = Registered Trademark
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DIMETHYL SULFIDE
Material Safety Data Sheet
Arkema Inc.
Arkema Inc. believes that the information and recommendations contained herein (including data and
statements) are accurate as of the date hereof. NO WARRANTY OF FITNESS FOR ANY PARTICULAR
PURPOSE, WARRANTY OF MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESSED OR
IMPLIED, IS MADE CONCERNING THE INFORMATION PROVIDED HEREIN. The information provided
herein relates only to the specific product designated and may not be valid where such product is used in
combination with any other materials or in any process. Further, since the conditions and methods of use are
beyond the control of Arkema Inc., Arkema Inc. expressly disclaims any and all liability as to any results
obtained or arising from any use of the product or reliance on such information.
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