ICSC 1630 - DIPHOSGENE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

DIPHOSGENE

ICSC: 1630
_{April 2007}

Formic acid, trichloro-methyl ester
Trichloromethyl chloroformate

CAS No: 503-38-8
RTECS No: LQ7350000

ClCOOCCl₃
Molecular mass: 197.83

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 Signal: Danger Skull Fatal if inhaled vapour May cause respiratory irritation

EMERGENCY RESPONSE	SAFE STORAGE
	Dry. Well closed. Keep in a well-ventilated room.

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	ENVIRONMENTAL DATA
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

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.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Updated by AS. Approved by GS. Last update: 29.01.2008