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DIMETHYL CARBONATE ICSC: 1080
Date of Peer Review: April 2005

Carbonic acid, dimethyl ester
Methyl carbonate
CAS # 616-38-6 C3H6O3 / H3COCOOCH3
RTECS # FG0450000 Molecular mass: 90.1
UN # 1161
EC # 607-013-00-6
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking. NO contact with oxidants.
Water spray. Alcohol-resistant foam. Dry powder. 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. Use non-sparking handtools.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


Inhalation Cough.
Ventilation.
Fresh air, rest.
Skin
Protective gloves.
Rinse and then wash skin with water and soap.
Eyes Redness.
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion
Do not eat, drink, or smoke during work.
Rinse mouth.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours. Remove all ignition sources. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer.
EU Classification
Symbol: F
R: 11
S: (2-)-9-16
UN Classification
UN Hazard Class: 3
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30S1161
NFPA Code: H1; F3; R1
Fireproof. Separated from strong oxidants. Well closed. 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 CARBONATE ICSC: 1080
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. The vapour mixes well with air, explosive mixtures are formed easily.

CHEMICAL DANGERS:
Reacts violently with oxidants and potassium tert-butoxide causing fire hazard. The substance decomposes on burning producing irritating fumes.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.
EFFECTS OF SHORT-TERM EXPOSURE:
The vapour is mildly irritating to the eyes.

PHYSICAL PROPERTIES
Boiling point: 90C
Melting point: 3C
Relative density (water = 1): 1.07
Solubility in water: none
Vapour pressure, kPa at 25C: 7.4
Relative vapour density (air = 1): 3.1
Relative density of the vapour/air-mixture at 20C (air = 1): 1.1
Flash point: 18C o.c.
Auto-ignition temperature: 458C
Explosive limits, vol% in air: 4.2-12.9
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