IUPAC Name: 1,5,7,8,9,10,10-heptachlorotricyclo[^2,6]deca-3,8-diene

MCL: 0.0004 ppm

Source: Formerly used as a pesticide, environmental transformation produces heptachlor epoxide.

Summary: Heptachlor is an organochlorine compound formerly used as an insecticide. It is banned in the United States for use as a pesticide. If released to the environment, animals may degrade the product to heptachlor epoxide. Heptachlor was often used in pesticide solutions containing chlordane. Cis and trans isomers of chlordane exist as impurities of heptachlor. It is soluble in water up to 0.18 mg/L at 25 C. The chemical is corrosive to metals. It has a biological half-life in fish of 28.18 days. Bioaccumulation in organisms is expected to be high. It is classified by the EPA as a Hazardous Air Pollutant (HAPs). Koc values ranging from 13,330 – 661,000 indicate low to no mobility within soil.

GHS Hazard Statement: H300, H301, H310, H311, H351, H360, H370, H372, H373, H400, H410, GHS06, GHS08, GHS09