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DIPHOSGENE ICSC: 1630
Date of Peer Review: April 2007

 Formic acid, trichloro-methyl ester
Trichloromethyl chloroformate
CAS # 503-38-8 ClCOOCCl3
RTECS # LQ7350000 Molecular mass: 197.83
UN #
EC/EINECS # 207-965-9
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
STRICT HYGIENE!

Inhalation Burning sensation. Tightness in the chest. Sore throat. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed (see Notes).
Breathing protection. Closed system and 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 Causes watering of the 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 Sore throat.
Do not eat, drink, or smoke during work.
Rinse mouth.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: Chemical protection suit including self-contained breathing apparatus. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place.

GHS Classification
Danger
Fatal if inhaled vapour
May cause respiratory irritation
EMERGENCY RESPONSE STORAGE

Dry. Well closed. Keep in a well-ventilated room.
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 2005

SEE IMPORTANT INFORMATION ON BACK
DIPHOSGENE ICSC: 1630
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes, including chlorine and phosgene. Reacts with water to produce toxic and corrosive fumes.

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

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the respiratory tract, the skin and the eyes. Lachrymation. Inhalation of this substance may cause lung oedema (see Notes).
PHYSICAL PROPERTIES
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
ENVIRONMENTAL DATA

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 is therefore essential. See Phosgene ICSC0007.
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 2005 



    See Also:
       Toxicological Abbreviations