IPCS INCHEM Home
DIPHOSGENEICSC: 1630
April 2007
CAS #: 503-38-8Formic acid, trichloro-methyl ester
Trichloromethyl chloroformate
EINECS #: 207-965-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible.        In case of fire in the surroundings, use appropriate extinguishing media.   

 STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Burning sensation. Chest tightness. Sore throat. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed. See Notes.  Use breathing protection. Use closed system or ventilation.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness.  Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes Watering of the 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 Sore throat.  Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. 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. 

According to UN GHS Criteria

skull;toxic
DANGER
Fatal if inhaled
May cause respiratory irritation 

Transportation
UN Classification
 

STORAGE
Dry. Well closed. Keep in a well-ventilated room. 
PACKAGING
 
DIPHOSGENE ICSC: 1630
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour is heavier than air. 

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes including chlorine and phosgene. Reacts with water. This produces toxic and corrosive fumes. 

Formula: ClCOOCCl3
Molecular mass: 197.83
Boiling point at 101.3 kPa: 128°C
Melting point: -57°C
Density: 1.6 g/cm³
Solubility in water: reaction
Vapour pressure, kPa at 20°C: 1.3
Relative vapour density (air = 1): 6.83
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.08
Octanol/water partition coefficient as log Pow: 1.49  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body in hazardous amounts by inhalation. 

Effects of short-term exposure
The substance is irritating to the respiratory tract, skin and eyes. Lachrymation. Inhalation may cause lung oedema. See Notes. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
 

NOTES
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
See Phosgene ICSC0007. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations