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Name	1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin	EINECS	N/A
CAS No.	35822-46-9	Density	1.834g/cm³
PSA	18.46000	LogP	8.15840
Solubility	0.002565ug/L(26.0 oC)	Melting Point	265°C
Formula	C12H Cl7 O2	Boiling Point	503.3°Cat760mmHg
Molecular Weight	425.31	Flash Point	189.6°C
Transport Information	N/A	Appearance	N/A
Safety	A poison by ingestion. Questionable carcinogen. When heated to decomposition it emits toxic vapors of Cl⁻.	Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin;1,2,3,4,6,7,8-Heptachlorodibenzo[1,4]dioxin; 1,2,3,4,6,7,8-Heptachlorodibenzo[b,e][1,4]dioxin;1,2,3,4,6,7,8-Heptachlorodibenzodioxin; 1,2,3,4,6,7,8-HpCDD; D 73;Heptachlorodibenzo-p-dioxin; HpCDD; PCDD 73	Article Data	3

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin Chemical Properties

IUPAC Name: 1,2,3,4,6,7,8-Heptachlorooxanthrene
Synonyms: 1,2,3,4,6,7,8-Heptachlorooxanthrene ; Dibenzo[b,e][1,4]dioxin, 1,2,3,4,6,7,8-heptachloro- ; 1,2,3,4,6,7,8-Heptachloro dibenzo-p-dioxin ; 1,2,3,4,6,7,8-Heptachlorodibenzo(b,e)(1,4)dioxin
CAS NO: 35822-46-9
Molecular Formula of 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin (CAS NO.35822-46-9) : C₁₂HCl₇O₂
Molecular Weight of 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin (CAS NO.35822-46-9) :425.30614
Molecular structure of 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin (CAS NO.35822-46-9) :
Index of Refraction: 1.67
Surface Tension: 60.6 dyne/cm
Density: 1.834 g/cm³
Flash Point: 189.6 °C
Enthalpy of Vaporization: 74.33 kJ/mol
Boiling Point: 503.3 °C at 760 mmHg
Vapour Pressure: 9.18E-10 mmHg at 25°C
Appearance:Off-white powder
Water solubility:Insoluble in water.
Sensitivity:may be sensitive to prolonged exposure to light

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
guinea pig	LD50	oral	> 600ug/kg (0.6mg/kg)		Pergamon Series on Environmental Science. Vol. 5, Pg. 367, 1982.
rat	LD50	oral	6325ug/kg (6.325mg/kg)		Archives of Toxicology. Vol. 66, Pg. 471, 1992.

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin 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) .

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin Safety Profile

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

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