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 sulfoxide(67-68-5)

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 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 Properties

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 Measures

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 Storage

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 Identification

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 Protection

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 Measures

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 Measures

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 Reactivity

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 Information

UN Number
2811
HS Code
2930 90 70
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