Carbonic acid, dimethyl ester
Methyl carbonate
C3H6O3 / H3COCOOCH3
Molecular mass: 90.1
ICSC # 1080
CAS # 616-38-6
RTECS # FG0450000
UN # 1161
EC # 607-013-00-6
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Highly flammable.
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NO open flames, NO sparks, and NO smoking.
NO contact with oxidants.
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Water spray.
Alcohol-resistant foam.
Dry powder.
Carbon dioxide.
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Explosion
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Vapour/air mixtures are explosive.
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Closed system, ventilation, explosion-proof electrical equipment and lighting.
Do NOT use compressed air for filling, discharging, or handling.
Use non-sparking handtools.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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•Inhalation
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Cough.
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Ventilation.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety goggles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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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.
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Fireproof.
Separated from
strong oxidants.
Well closed.
Store in an area without drain or sewer access.
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F symbol
R: 11
S: 2-9-16
UN Hazard Class: 3
UN Packing Group: II
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Important Data
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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
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Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
Inhalation Risk:
Effects of Short-Term Exposure:
The vapour
is mildly irritating to
the eyes
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Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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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
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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
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Environmental
Data
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N O T E S
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Transport Emergency Card: TEC (R)-30S1161
NFPA Code: H1; F3; R1
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ADDITIONAL INFORMATION
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ICSC: 1080
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DIMETHYL CARBONATE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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