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Dimethyl sulfoxide(67-68-5)

Dimethyl sulfoxide(67-68-5)
Product IdentificationBack to Contents
【Product Name】

Dimethyl sulfoxide
【Synonyms】

Dipirartril-tropico
DMSO
Dolicur
Methanesulfinylmethane
Methyl sulfoxide
N-[4-(Trifluoromethyl)phenyl]acetamide
p-Trifluoromethylacetanilide
Sulfinylbismethane
【CAS】

67-68-5
【CAS】

349-97-3
【Formula】

C2H6OS
【Formula】

C9H8F3NO
【Molecular Weight】

78.13
【Molecular Weight】

203.16
【EINECS】

206-495-1
【EINECS】

200-664-3
【RTECS】

PV6210000
【RTECS Class】

Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data; Primary Irritant
【Merck】

13,3285
【Beilstein/Gmelin】

2106965
【Beilstein/Gmelin】

506008
【Beilstein Reference】

3-12-00-02151
【Beilstein Reference】

4-01-00-01277
Physical and Chemical PropertiesBack to Contents
【Appearance】

Clear, colorless liquid, odorless or with a light sulfur, garlic or oyster-like odor depending on purity.
【Solubility in water】

Miscible
【Melting Point】

18.5
【Melting Point】

208 - 211
【Boiling Point】

189
【Vapor Pressure】

0.42 (20 C)
【Density】

1.101 g/cm3 (20 C)
【pKa/pKb】

35(at 25℃) (pKa)
【Partition Coefficient】

-2.03
【Heat Of Vaporization】

40.8 kJ/mol
【Heat Of Combustion】

-1715 kJ/mol
【Usage】

Medication.
【Saturation Concentration】

592 ppm (0.059%) at 20 C; 790 ppm (0.079%) (calculated)
【Vapor Density】

2.7
【Refractive Index】

1.4783 (20 C)
First Aid MeasuresBack to Contents
【Ingestion】

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Ingestion】

Seek medical assistance.
【Inhalation】

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
【Inhalation】

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
【Inhalation】

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
【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】

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
【Skin】

Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
【Eyes】

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
【Eyes】

Immediately flush with running water for at least 20 minutes.
【Eyes】

See Inhalation.
Handling and StorageBack to Contents
【Storage】

Keep away from heat, sparks, and flame. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】

Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse.
Hazards IdentificationBack to Contents
【Ingestion】

See Inhalation.
【Inhalation】

May cause respiratory tract irritation. Can produce delayed pulmonary edema.
【Skin】

May cause irritation with burning pain, itching and redness. Substance is rapidly absorbed through the skin.
【Eyes】

Produces irritation, characterized by a burning sensation, redness, tearing, inflammation, and possible corneal injury. May cause chemical conjunctivitis.
【Ingestion】

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. May cause garlic smell on the breath and body.
【Hazards】

Contact with metals may evolve flammable hydrogen gas.
【Hazards】

Poisonous gases may be produced in fire.
【EC Risk Phrase】

R 22
【EC Risk Phrase】

R 36/38
【EC Safety Phrase】

S 22 36/37
【EC Safety Phrase】

S 26 36
【UN (DOT)】

2811
Exposure Controls/Personal ProtectionBack to Contents
【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.
【Personal Protection】

Wear appropriate protective gloves, clothing and goggles.
【Respirators】

Wear positive pressure self-contained breathing apparatus (SCBA).
【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】

Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage. Effects may be delayed.
【Exposure limit(s)】

OEL-RUSSIA:STEL 20 mg/m3
【Poison Class】

-
Fire Fighting MeasuresBack to Contents
【Flash Point】

95
【Autoignition】

300
【Fire Fighting】

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode when heated. Extinguishing media: Cool containers with flooding quantities of water until well after fire is out. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
【Fire Fighting】

Extinguish using agent most appropriate for surrounding fire.
【Upper exp. limit】

63.0
【Lower exp. limit】

1.8
【Fire Potential】

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
【Fire Potential】

Slightly flammable. Requires preheating.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Do not flush into a sewer. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.
【Small spills/leaks】

ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability and ReactivityBack to Contents
【Disposal Code】

1
【Stability】

Stable at room temperature in closed containers under normal storage and handling conditions.
【Incompatibilities】

Strong oxidizing agents, strong acids, strong bases.
【Decomposition】

Carbon monoxide, oxides of sulfur, carbon dioxide.
【Combustion Products】

Fire may produce irritating, corrosive and/or toxic gases.
【Combustion Products】

Sulfur dioxide, formaldehyde, and methyl mercaptan can form
Transport InformationBack to Contents
【UN Number】

2811
【HS Code】

2930 90 70
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