Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Dimethyl sulfone(67-71-0)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Dimethyl sulfone
Synonyms
2,2,2-Trifluoroacetonitrile
Cyanotrifluoromethane
Methyl sulfone
Methylsulfonylmethane
Perfluoroacetonitrile
Sulfonylbismethane
Trifluoromethyl cyanide
Trifluoromethylcarbonitrile
CAS
353-85-5
CAS
67-71-0
Formula
C2F3N
Formula
C2H6O2S
Molecular Weight
94.13
Molecular Weight
95.02
EINECS
200-665-9
EINECS
206-542-6
RTECS
PB2785000
RTECS Class
Other
Merck
13,3284
Beilstein/Gmelin
1737717
Beilstein/Gmelin
1742942
Beilstein Reference
4-01-00-01279
Beilstein Reference
4-02-00-00472

Physical and Chemical Properties

Appearance
colorless gas
Appearance
White, crystalline powder.
Solubility in water
Soluble
Solubility in water
150 g/L
Melting Point
107 - 110
Boiling Point
238
Boiling Point
-64
Vapor Pressure
760 (238 C)
Vapor Pressure
16200 (25 C)
Density
1.1700 g/cm3 (110C)
pKa/pKb
28(at 25℃) (pKa)
Partition Coefficient
1.08
Heat Of Vaporization
18.7 kJ/mol
Usage
High temp solvent for many inorganic and organic substances.
Vapor Density
3.3
Refractive Index
1.4226 (20 C)

First Aid Measures

Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Ingestion
May be harmful if swallowed.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
Inhalation
May be fatal if inhaled. Material may be irritating to mucous membranes and upper respiratory tract. Can cause rapid suffocation.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Skin
In case of contact, immediately wash skin with soap and copious amounts of water.
Skin
May cause skin irritation. Skin contact may produce local frostbite, anesthesia and also may be irritating due to defatting action. May be harmful if absorbed through the skin.
Eyes
May cause eye irritation.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Handling and Storage

Storage
Keep tightly closed. Cylinder temperature should not exceed 125 F (52 C).
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Skin
May cause skin irritation.
Eyes
May cause eye irritation.
Hazards
Emits toxic fumes under fire conditions.
EC Risk Phrase
26
EC Safety Phrase
38
EC Safety Phrase
S 22 24/25
UN (DOT)
1955

Exposure Controls/Personal Protection

Personal Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Government approved respirator in nonventilated areas and/or for exposure above the TLV or PEL.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Exposure Effects
Very toxic by inhalation. nonflammable high-pressure liquid and gas.

Fire Fighting Measures

Flash Point
143
Flash Point
-85
Fire Fighting
Extinguish using Use water spray or fog nozzle to keep cylinder cool. Move cylinder away from fire if there is no risk. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Small spills/leaks
Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Disposal Code
3
Stability
Stable at normal temperatures and pressures.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Nitrogen oxides, Hydrogen fluoride, Hydrogen cyanide.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide.
Combustion Products
Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
1955
Hazard Class
2
HS Code
2930 90 70
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