Agent Name

Diphosgene

Alternative Name

Trichloromethyl chloroformate

CAS Number

503-38-8

Formula

C2-Cl4-O2

Major Category

Toxic Gases & Vapors

Synonyms

Carbonochloridic acid trichloromethyl ester; Difosgen [Czech]; Diphosgen; Diphosgene; Formic acid, chloro-, trichloromethyl ester; Methanol, trichloro-, chloroformate; Perchloromethyl formate; Superpalite; Trichlormethylester kyseliny chlormravenci [Czech]; Trichloromethyl chloroformate [ChemIDPlus]

Category

Acid Halides

Description

Colorless liquid with a fruity odor or odorless; [CAMEO]

Sources/Uses

Used as a chemical intermediate and miltary weapon; [CAMEO]

Comments

Similar to phosgene in reactivity; Decomposes slowly in water or moisture to release hydrochloric acid and carbon monoxide; Skin contact may cause burns or frostbite; [CAMEO] Causes lachrymation; [ICSC] See "Phosgene."

Exposure Assessment
TIH

Yes

Lethal Concentration

LCLo (rabbits) = 900 mg/m3/15 min

Adverse Effects
Lacrimator

Yes

Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: