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A pale yellow, oily liquid used as an Insecticide. Chlordane was introduced in 1945 for the control of cockroaches. Within ten years, it was the most widely used insecticide in the United States. In 1975, the use of chlordane was restricted to subterranean termites because of its toxicity to humans. It is also an environmental hazard because it is very persistent and does not breakdown with time.

Synonyms and Related Terms

octachlorohexahydromethanoindene; chlordan; octachlor; Belt; Octaklor; Velsicol 1068; Aspon Chlordane; Corodane; Niran; Toxichlor; Octachlor [Velsicol]; Ortho-klor; Synklor; Topiclor; Toxichlor


  • Toxic by ingestion, inhalation, and skin contact. LD50 = 457-590 mg/kg
  • Carcinogenic, mutagenic.
  • Environmental hazard.
  • EChemi: SDS

Physical and Chemical Properties

Soluble in many organic liquids. Insoluble in water. Decomposes in weak alkalis.

Composition C10H6Cl8
CAS 57-74-9
Density 1.59-1.63 g/ml
Molecular Weight mol. wt. = 409.76
Refractive Index 1.56-1.57
Boiling Point 175 C

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • Encyclopedia Britannica, Comment: "chlordane" [Accessed March 26, 2002]. date of introduction from History of Agriculture page
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 412
  • Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
  • Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
  • G.Caneva, M.P.Nugari, O.Salvadori, Biology in the Conservation of Works of Art, ICCROM, Rome, 1991

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