Dibenzo[b,e][1,4]dioxin,1,2,3,7,8-pentachloro- cas no:40321-76-4

Synonyms: 1,2,3,7,8-PeCDD;1,2,3,7,8-Pentachlorodibenzo-p-dioxin;1,2,3,7,8-Pentachlorodibenzo[b,e][1,4]dioxin; 1,2,3,7,8-Pentachlorodibenzodioxin;1,2,3,7,8-PnCDD; 2,3,4,7,8-Pentachlorodibenzo-p-dioxin;2,3,4,7,8-Pentachlorodibenzodioxin; D 54; PCDD 54

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Identification
Chemical Properties
Globally Harmonized System of Classification adn Labelling of Chemicals(GHS)
Safety Data
Toxicity

Identification

NameDibenzo[b,e][1,4]dioxin,1,2,3,7,8-pentachloro-
CAS40321-76-4
Synonyms1,2,3,7,8-PeCDD;1,2,3,7,8-Pentachlorodibenzo-p-dioxin;1,2,3,7,8-Pentachlorodibenzo[b,e][1,4]dioxin; 1,2,3,7,8-Pentachlorodibenzodioxin;1,2,3,7,8-PnCDD; 2,3,4,7,8-Pentachlorodibenzo-p-dioxin;2,3,4,7,8-Pentachlorodibenzodioxin; D 54; PCDD 54
Molecular FormulaC12H3 Cl5 O2
Molecular Weight356.40

Chemical Properties

refractive index1.661

Globally Harmonized System of Classification adn Labelling of Chemicals(GHS)

Hazardclass6.1(a)

Safety Data

Safety

Poison by ingestion. Questionable carcinogen. When heated to decomposition it emits toxic fumes of Cl⁻. See also CHLORINATED HYDROCARBONS, AROMATIC.
RIDADR 2811
HazardClass 6.1(a)
PackingGroup I

Toxicity

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Source
guinea pig	LD50	oral	3100ng/kg (0.0031mg/kg)	Toxicology and Applied Pharmacology. Vol. 44, Pg. 335, 1978.
mouse	LD50	oral	337500ng/kg (0.3375mg/kg)	Toxicology and Applied Pharmacology. Vol. 44, Pg. 335, 1978.
rat	LD50	oral	206ug/kg (0.206mg/kg)	Archives of Toxicology. Vol. 66, Pg. 471, 1992.

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