HEPTACHLOR

''
Systematic name
Chemical formula	C10H5Cl7
Molecular mass	373.32 g/mol
Density	1.58 g/cm3
Melting point	95-96 °C
Boiling point	135-145 °C at 1-1.5 m Hg
CAS number	[76-44-8]
SMILES	ClC1(C(Cl)2Cl)C(C=CC3Cl)C3C2(Cl)C(Cl)=C1Cl

'Heptachlor' is an insecticide that usually comes in the form of a white or tan powder, the tan powder being of lower purity. It is similar to insecticide chlordane. Heptachlor was widely used in the past to kill insects. In 1962, Rachel Carson's ''Silent Spring'' questioned the safety of heptachlor. The Environmental Protection Agency has banned the sale of heptachlor products in the United States and virtually eliminated its use for any purpose. Due to its highly stable structure, heptachlor can persist in the environment for decades. The amount that can be present in different foods is regulated.

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★ ASTDR ToxFAQs for Heptachlor