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40321-76-4

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CAS No.: 40321-76-4
Name: 1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN
Article Data: 10
Molecular Structure:
Molecular Structure of 40321-76-4 (1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN)
Formula: C12H3 Cl5 O2
Molecular Weight: 356.42
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
Density: 1.714g/cm3
Melting Point: 206°C (estimate)
Boiling Point: 448.5°Cat760mmHg
Flash Point: 174°C
Safety: Poison by ingestion. Questionable carcinogen. When heated to decomposition it emits toxic fumes of Cl−. See also CHLORINATED HYDROCARBONS, AROMATIC.
PSA: 18.46000
LogP: 6.85160
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Chemistry

IUPAC Name: 1,2,3,7,8-Pentachlorooxanthrene
Synonyms: 1,2,3,7,8-Pentachlorodibenzo-p-dioxin ; 1,2,3,7,8-Pentachlorooxanthrene ; Dibenzo[b,e][1,4]dioxin, 1,2,3,7,8-pentachloro- ; 1,2,3,7,8-Penta polychlorinated dibenzo-p-dioxin
CAS NO:40321-76-4
Molecular Formula of 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (CAS NO.40321-76-4) :C12H3Cl5O2
Molecular Weight of 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (CAS NO.40321-76-4) : 356.41602
Molecular structure of 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (CAS NO.40321-76-4) :
Index of Refraction: 1.661
Surface Tension: 58.6 dyne/cm
Density: 1.714 g/cm3
Flash Point: 174 °C
Enthalpy of Vaporization: 67.99 kJ/mol
Boiling Point: 448.5 °C at 760 mmHg
Vapour Pressure: 8.14E-08 mmHg at 25°C

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect 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.

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

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