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DIMETHYL DISULFIDE ICSC: 1586
Date of Peer Review: April 2005

Methyl disulfide
Disulfide, dimethyl-
CAS # 624-92-0 C2H6S2
RTECS # JO1927500 Molecular mass: 94.2
UN # 2381
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Above 24C explosive vapour/air mixtures may be formed.
Above 24C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


Inhalation Headache. Nausea. Dizziness. Drowsiness.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Redness.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain.
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion (See Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Give a slurry of activated charcoal in water to drink. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours. Ventilation. Remove all ignition sources. Collect leaking liquid in sealable containers.
EU Classification
UN Classification
UN Hazard Class: 3
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30GF1-I-II
Fireproof. Store in an area without drain or sewer access.
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 1999

SEE IMPORTANT INFORMATION ON BACK
DIMETHYL DISULFIDE ICSC: 1586
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
LIQUID, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
The substance decomposes on burning producing toxic and corrosive fumes including sulfur oxides. Reacts violently with oxidants.

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

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is mildly irritating to the skin and is irritating to the eyes and the respiratory tract. The substance may cause effects on the central nervous system.

PHYSICAL PROPERTIES
Boiling point: 110C
Melting point: -85C
Relative density (water = 1): 1.06
Solubility in water, g/100 ml at 20C: 0.25 (very poor)
Vapour pressure, kPa at 25C: 3.8
Relative density of the vapour/air-mixture at 20C (air = 1): 1.08
Flash point: 24C c.c.
Auto-ignition temperature: >300C
Explosive limits, vol% in air: 1.1-16
Octanol/water partition coefficient as log Pow: 1.77
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 1999