Agent Name

Dichloroacetylene

CAS Number

7572-29-4

Formula

C2-Cl2

Major Category

Other Classes

Synonyms

DCA, Dichloroethyne [Note: DCA is a possible decomposition product of trichloroethylene or trichloroethane.] [NIOSH]

Category

Halogenated Aliphatics, Unsaturated

Description

Volatile oil with a disagreeable, sweetish odor. [Note: A gas above 90 degrees F. DCA is not produced commercially.] [NIOSH]

Sources/Uses

A by-product of vinylidene chloride production and trichloroethylene thermal decomposition; Not produced commercially; [ACGIH]

Comments

Dichloroacetylene is formed from the thermal decomposition of trichloroethylene or tetrachloroethane. Dichloroacetylene poisoning causes injury to the kidneys and nervous system. Affected patients may have trigeminal nerve paralysis and reactivation of facial herpes. Most cases were reported when trichloroethylene was used as an anesthetic. [ACGIH]

Restricted

Transport forbidden; [HMT]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

Ceiling (ACGIH)

0.1 ppm

Vapor Pressure

570 mm Hg

Lethal Concentration

LC50 (mouse) = 23 ppm/4h

Adverse Effects
Neurotoxin

Sensorimotor Neuropathy

Nephrotoxin

Yes

IARC Carcinogen

Not Classifiable

ACGIH Carcinogen

Confirmed Animal

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.