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Substance Name: Heptachlor epoxide
RN: 1024-57-3
UNII: 055UWF6R6I
InChIKey: ZXFXBSWRVIQKOD-UOFFAGTMSA-N

Note

  • An oxidation product of HEPTACHLOR formed by many plants and animals, including humans, after exposure to HEPTACHLOR. It has been shown to remain in soil treated with HEPTACHLOR for over fifteen years and is toxic to animals and humans. (From ATSDR Public Heath Statement, April 1989)

Molecular Formula

  • C10-H5-Cl7-O

Molecular Weight

  • 389.3195
 

Classification Codes

Classification Codes

  • Agricultural Chemical
  • Insecticide
  • Insecticides
  • Mutation Data
  • Pesticides
  • Tumor Data

Superlist Classification Codes

  • 2007 CERCLA Priority List, Rank: 46
  • 2011 CERCLA Priority List, Rank: 47
  • Overall Carcinogenic Evaluation: Group 2B
  • Reportable Quantity (RQ) = 1 lb
  • TWA 0.05 mg/m3; skin; Confirmed animal carcinogen with unknown relevance to humans
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Names and Synonyms

Name of Substance

  • Heptachlor epoxide

MeSH Heading

  • Heptachlor epoxide

Synonyms

  • 1,4,5,6,7,8,8-Heptachloro-2,3-epoxy-2,3,3a,4,7,7a-hexahydro-4,7-methanoindene
  • 1,4,5,6,7,8,8-Heptachloro-2,3-epoxy-3a,4,7,7a-tetrahydro-4,7-methanoindan
  • 2,3,4,5,6,7,7-Heptachloro-1a,1b,5,5a,6,6a-hexahydro-2,5-methano-2H-indeno(1,2-b)oxirene
  • 2,5-Methano-2H-oxireno(a)indene, 2,3,4,5,6,7,7-heptachlor-1a,1b,5,5a,6,6a-hexahydro-
  • 2,5-Methano-2H-oxireno(a)indene, 2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a-hexahydro-
  • AI3-25584
  • CCRIS 9452
  • EINECS 213-831-0
  • ENT 25,584
  • Epoxyheptachlor
  • HCE
  • Heptachlor epoxide
  • HSDB 6182
  • UNII-055UWF6R6I
  • Velsicol 53-CS-17

Systematic Names

  • 2,5-Methano-2H-indeno(1,2-b)oxirene, 2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a-hexahydro-, (1aalpha,1bbeta,2alpha,5alpha,5abeta,6beta,6aalpha)-
  • 2,5-Methano-2H-indeno(1,2-b)oxirene, 2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a-hexahydro-,(1aR,1bS,2R,5S,5aR,6S,6aR)-rel-
  • 4,7-Methanoindan, 1,4,5,6,7,8,8-heptachloro-2,3-epoxy-3a,4,7,7a-tetrahydro-
  • Heptachlor epoxide

Superlist Names

  • 2,5-Methano-2H-indeno(1,2-b)oxirene, 2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a-hexahydro-, (1aalpha,1bbeta,2alpha,5alpha,5abeta,6beta,6aalpha)-
  • Heptachlor epoxide

Registry Numbers

CAS Registry Number

  • 1024-57-3

FDA UNII

  • 055UWF6R6I

Other Registry Numbers

  • 24699-42-1
  • 24717-72-4
  • 28044-82-8
  • 4067-30-5
  • 66240-71-9

System Generated Number

  • 0001024573

Structure Descriptors

InChI

1S/C10H5Cl7O/c11-3-1-2(4-5(3)18-4)9(15)7(13)6(12)8(1,14)10(9,16)17/h1-5H/t1-,2+,3+,4-,5+,8+,9-/m0/s1

InChIKey

ZXFXBSWRVIQKOD-UOFFAGTMSA-N

Smiles

[C@@H]12[C@@H]([C@H]([C@@H]3[C@H]1O3)Cl)[C@]4(C(=C([C@@]2(C4(Cl)Cl)Cl)Cl)Cl)Cl

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cattle LDLo oral 5mg/kg (5mg/kg)   Journal of Economic Entomology. Vol. 52, Pg. 1127, 1959.
cattle LDLo oral 5mg/kg (5mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
Journal of Economic Entomology. Vol. 52, Pg. 1127, 1959.
mouse LD50 intracrebral 8mg/kg (8mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD Toxicology Letters. Vol. 60, Pg. 289, 1992.
mouse LD50 oral 39mg/kg (39mg/kg)   Agricultural Research Service, USDA Information Memorandum. Vol. 20, Pg. 27, 1966.
mouse LDLo intravenous 10mg/kg (10mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 107, Pg. 266, 1953.
rabbit LD50 oral 144mg/kg (144mg/kg)   "Pesticides Symposia; Collection of Papers Presented at the Sixth & Seventh Inter-American Conferences on Toxicology and Occupational Medicine, Miami, FL," Miami, FL, J.L. Halos, 1968-70Vol. 6, Pg. 231, 1968/1970.
rat LD50 oral 15mg/kg (15mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(2), Pg. 93, 1987.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 160 deg C   EXP
log P (octanol-water) 4.98 (none)   EXP
Water Solubility 0.2 mg/L 25 EXP
Vapor Pressure 1.95E-05 mm Hg 30 EXP
Henry's Law Constant 2.10E-05 atm-m3/mole 25 EXP
Atmospheric OH Rate Constant 5.17E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.