Product Name

  • Name

    1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN

  • EINECS
  • CAS No. 40321-76-4
  • Article Data10
  • CAS DataBase
  • Density 1.714g/cm3
  • Solubility
  • Melting Point 206°C (estimate)
  • Formula C12H3 Cl5 O2
  • Boiling Point 448.5°Cat760mmHg
  • Molecular Weight 356.42
  • Flash Point 174°C
  • Transport Information
  • Appearance
  • Safety Poison by ingestion. Questionable carcinogen. When heated to decomposition it emits toxic fumes of Cl. See also CHLORINATED HYDROCARBONS, AROMATIC.
  • Risk Codes
  • Molecular Structure Molecular Structure of 40321-76-4 (1,2,3,7,8-PENTACHLORODIBENZO-P-DIOXIN)
  • Hazard Symbols
  • 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
  • PSA 18.46000
  • LogP 6.85160

1,2,3,7,8-Pentachlorodibenzo-p-dioxin Chemical Properties

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

1,2,3,7,8-Pentachlorodibenzo-p-dioxin 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.

1,2,3,7,8-Pentachlorodibenzo-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)

1,2,3,7,8-Pentachlorodibenzo-p-dioxin 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

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