Heptachlor is an organochlorine compound that was used as an insecticide. Usually sold as a white or tan powder, heptachlor is one of the cyclodiene insecticides. In 1962, Rachel Carson 's Silent Spring questioned the safety of heptachlor and other chlorinated insecticides.

Heptachlor is a constituent of technical grade chlordane, approximately 10 percent by weight. (1) Heptachlor was used as an insecticide in the United States from 1953 to 1974. In 1974, nearly all registered uses of heptachlor were canceled.

Heptachlor is a cyclodiene organochlorine insecticide that is 3a,4,7,7a-tetrahydro-1H-4,7-methanoindene substituted by chlorine atoms at positions 1, 4, 5, 6, 7, 8 and 8. Formerly used to kill termites, ants and other insects in agricultural and domestic situations.

Heptachlor, largely banned insecticide closely related to chlordane. It was used in agriculture as a soil and seed treatment and was also used in homes and other buildings for termite control. Heptachlor is readily absorbed through the skin, and its use has been banned in many countries.

Heptachlor is not found naturally in the earth. It is a man-made compound that looks like a white powder and smells like mothballs. Pure forms of heptachlor are white but less pure forms of this substance appear tan. What is heptachlor used for?

Heptachlor, a chlorinated cyclodiene, is a white to light tan, waxy solid, which is available as a dust, dust concentrate, emulsifiable concentrate, wettable powder, and oil solution.

Summary: Heptachlor is a manufactured chemical and doesn't occur naturally. Pure heptachlor is a white powder that smells like camphor (mothballs). The less pure grade is tan. Trade names include Heptagran®, Basaklor®, Drinox®, Soleptax®, Termide®, and Velsicol 104®.

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Heptachlor is a chlorinated hydrocarbon insecticide, presently used in the United States only to control fire ants in buried, pad-mounted electric power transformers and in underground cable television and telephone cable boxes.

Heptachlor has been registered in the United Statasaj as an insecticide for use in agriculture, home lawns, gardens, and ^structural pest control since 1952. Of the total used in the United Stats; in 1971 over 98 percent was used for soil application in agriculture and termite control.