Agent Name

2,7-Dichlorodibenzo-p-dioxin

CAS Number

33857-26-0

Formula

C12-H6-Cl2-O2

Major Category

Other Classes

Synonyms

2,7-Dichlorodibenzo-4-dioxin; 2,7-Dichlorodibenzodioxin; DCDD; Dibenzo(b,e)(1,4)dioxin, 2,7-dichloro-; Dibenzo-p-dioxin, 2,7-dichloro-; [ChemIDplus]

Category

Halogenated Polyaromatics

Description

Colorless solid; [HSDB] White solid; [MSDSonline]

Sources/Uses

May be present as impurity in the pesticides 2,4-D and Dicamba, resulting in occupational exposure; May also be found in fly ash particulates, municipal waste incinerator emissions, and automobile exhaust; Not commercially produced in the US; [HSDB]

Comments

IARC classification is for polychlorinated dibenzo-para-dioxins other than 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD); Polychlorodibenzodioxins have caused chloracne in humans; [HSDB] May cause chloracne, porphyria, and liver injury; [CAMEO]

Exposure Assessment
Vapor Pressure

9.0E-7 mm Hg

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Reproductive Toxin

Yes

Dermatotoxin

Chloracne

IARC Carcinogen

Not Classifiable

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
Diseases

Occupational diseases associated with exposure to this agent: