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DIMETHYLSULPHIDE ICSC: 0878
Date of peer-review: March 1999

Thiobismethane
Methylsulphide
CAS # 75-18-3 C2H6S / (CH3)2S
RTECS # PV5075000 Molecular mass: 62.1
UN # 1164
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Powder, AFFF, foam, carbon dioxide.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


Inhalation Cough. Nausea. Sore throat. Weakness.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Redness. Pain.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness.
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Weakness.
Do not eat, drink, or smoke during work.
Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Collect leaking liquid in sealable containers. Do NOT wash away into sewer. (Extra personal protection: filter respirator for organic gases and vapours).
EU Classification
UN Classification
UN Hazard Class: 3
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30G30 NFPA Code: H2; F4; R0;
Fireproof. Separated from strong oxidants. Cool.
IPCS
International
Programme on
Chemical Safety 		Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities © IPCS, CEC 2001

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DIMETHYLSULPHIDE ICSC: 0878
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible.

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic and corrosive fumes (sulfur oxides). Reacts violently with oxidants causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
 ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour, and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes and the skin.

PHYSICAL PROPERTIES
Boiling point: 37.3°C
Melting point: -98°C
Relative density (water = 1): 0.85
Solubility in water: none
Vapour pressure, kPa at 20°C: 53.2
Relative vapour density (air = 1): 2.1
 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.6
Flash point: -49°C
Auto-ignition temperature: 205°C
Explosive limits, vol% in air: 2.2 - 19.7
Octanol/water partition coefficient as log Pow: 0.84
ENVIRONMENTAL DATA

NOTES

ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
© IPCS, CEC 2001 
    See Also:
       Toxicological Abbreviations