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19408-74-3

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Basic Information
CAS No.: 19408-74-3
Name: 1,2,3,7,8,9-Hexachlorodibenzo-P-Dioxin
Article Data: 23
Molecular Structure:
Molecular Structure of 19408-74-3 (1,2,3,7,8,9-Hexachlorodibenzo-P-Dioxin)
Formula: C12H2 Cl6 O2
Molecular Weight: 390.865
Synonyms: Dibenzo-p-dioxin,1,2,3,7,8,9-hexachloro- (8CI); 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin;1,2,3,7,8,9-Hexachlorodibenzo[1,4]dioxin;1,2,3,7,8,9-Hexachlorodibenzo[b,e][1,4]dioxin;1,2,3,7,8,9-Hexachlorodibenzodioxin; 1,2,3,7,8,9-HxCDD; D 70; PCDD 70
Density: 1.777g/cm3
Melting Point: 243.5°C
Boiling Point: 478°Cat760mmHg
Flash Point: 182.9°C
Safety: A poison by ingestion. Questionable carcinogen. Mutation data reported. When heated to decomposition it emits toxic vapors of Cl−.
PSA: 18.46000
LogP: 7.50500
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Chemistry

Chemistry informtion about 1,2,3,7,8,9-Hexachlorodibenzo-P-Dioxin(19408-74-3) is:
IUPAC Name: 1,2,3,7,8,9-hexachlorooxanthrene
Synonyms: 1,2,3,7,8,9-Hexachlorodibenzo(B,E)(1,4)Dioxin ; 1,2,3,7,8,9-Hexachloro-Dibenzo-P-Dioxi ; D70 ; Dibenzo-P-Dioxin,1,2,3,7,8,9-Hexachloro- ; Dibenzo-Para-Dioxin,Hexachloro- ; 1,2,3,7,8,9-Hcdd ; 1,2,3,7,8,9-Hxcdd ; 2,3,4,6,7,8-Hcdd
Molecular Weight: 390.86108 [g/mol]
Molecular Formula: C12H2Cl6O2
XLogP3: 7.4
H-Bond Donor: 0
H-Bond Acceptor: 2
Density: 1.777 g/cm3
Flash Point: 182.9 °C
Enthalpy of Vaporization: 71.37 kJ/mol
Boiling Point: 478 °C at 760 mmHg
Vapour Pressure: 7.72E-09 mmHg at 25°C
Following is the molecular structure of 1,2,3,7,8,9-Hexachlorodibenzo-P-Dioxin(19408-74-3) is:

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 60ug/kg (0.06mg/kg)   Toxicology and Applied Pharmacology. Vol. 44, Pg. 335, 1978.
mouse LD50 oral > 1440mg/kg (1440mg/kg) Endocrine: changes in spleen weight endocrine: changes in thymus weight blood: "changes in serum composition (e.g., tp, bilirubin, cholesterol)" Toxicology and Applied Pharmacology. Vol. 44, Pg. 335, 1978.

Consensus Reports

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 , 1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 15 , 1977,p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human No Adequate Data IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 15 , 1977,p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

Safety Profile

A poison by ingestion. Questionable carcinogen. Mutation data reported. When heated to decomposition it emits toxic vapors of Cl−. 
RIDADR: 2811
HazardClass: 6.1(a)
PackingGroup: I

Specification

1,2,3,7,8,9-Hexachlorodibenzo-P-Dioxin(19408-74-3) is a light pink crystalline solid. It insoluble in water. It is stable under normal laboratory conditions. Solutions may be sensitive to light. Methanol solutions are degraded on exposure to sunlight or ultraviolet irradiation. 1,2,3,7,8,9-Hexachlorodibenzo-P-Dioxin is probably combustible.