ChemicalBook >>Dimethyl sulfone>>Dimethyl sulfone(67-71-0)

Dimethyl sulfone(67-71-0)

Dimethyl sulfone(67-71-0)
Product IdentificationBack to Contents
【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 PropertiesBack to Contents
【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 MeasuresBack to Contents
【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 StorageBack to Contents
【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 IdentificationBack to Contents
【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 ProtectionBack to Contents
【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 MeasuresBack to Contents
【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 MeasuresBack to Contents
【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 ReactivityBack to Contents
【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 InformationBack to Contents
【UN Number】

1955
【Hazard Class】

2
【HS Code】

2930 90 70
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