IUPAC Name: 1,2,3,4,5,5-hexachlorocyclopenta-1,3-diene

MCL: 0.05 ppm

Source: Used in the production of pesticides and organic compounds.

Summary: Hexachlorocyclopentadiene (HCCPD) is a synthetic chemical used as an intermediate in the production of pesticides such as heptachlor, chlordane, aldrin, dieldrin, and endrin. It is also used in the production of flame retardants, resins and other organic compounds. It is a pale yellow liquid at room temperature that is soluble in water up to 1.8 mg/L at 25 C. It has a density of 1.7019 g/mL at 25 C. Upon decomposition it produces hydrogen chloride gas. It is classified by the EPA as a Hazardous Air Pollutant (HAPs). It exists as a vapor in the atmosphere with a half-life of 29 days. A Koc value of 4265 indicates low mobility within soil. Volatilization is expected to be a major fate process along with photodegradation. HCCPD undergoes rapid photodegradation in surface waters exposed to sunlight. Hydrolysis may also be an important fate process. Bioaccumulation in organisms is estimated to be very high.

GHS Hazard Statement: H302, H310, H311, H314, H315, H317, H318, H319, H330, H336, H370, H371, H372, H373, H400, H410, GHS05, GHS06, GHS07, GHS08, GHS09