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DIMETHYL CARBONATEICSC: 1080
Carbonic acid, dimethyl ester
Methyl carbonate
April 2005
CAS #: 616-38-6
UN #: 1161
EC Number: 210-478-4

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Highly flammable.  Vapour/air mixtures are explosive.  NO open flames, NO sparks and NO smoking. NO contact with oxidizing agents.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.  Use water spray, alcohol-resistant foam, dry powder, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough.  Use ventilation.  Fresh air, rest. 
Skin   Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: II 

STORAGE
Fireproof. Separated from strong oxidants. Well closed. Store in an area without drain or sewer access. 
PACKAGING
 
DIMETHYL CARBONATE ICSC: 1080
PHYSICAL & CHEMICAL INFORMATION

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 easily formed. 

Chemical dangers
Reacts violently with oxidants and potassium tert-butoxide. This generates fire hazard. Decomposes on burning. This produces irritating fumes. 

Formula: C3H6O3 / H3COCOOCH3
Molecular mass: 90.1
Boiling point: 90°C
Melting point: 3°C
Relative density (water = 1): 1.07
Solubility in water: none
Vapour pressure, kPa at 25°C: 7.4
Relative vapour density (air = 1): 3.1
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: 18°C o.c.
Auto-ignition temperature: 458°C
Explosive limits, vol% in air: 4.2-12.9 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
The vapour is mildly irritating to the eyes. 

Inhalation risk
 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F; R: 11; S: (2)-9-16 

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       Toxicological Abbreviations