Trans-Nonachlor, chemically known as 1,2,3,4,5,6,7,8,8-nonachloro-3a,4,7,7a-tetrahydro-4,7-methanoindane, is a component of technical chlordane and technical heptachlor. According to Interpretation No. 23 of the Federal Insecticide, Fungicide and Rodenticide Act, as amended, technical chlordane is defined as containing 60% octachloro-4,7-methanotetrahydroindane and 40% related compounds. Trans-Nonachlor is one of several chemicals found as a part of these related compounds and has been detected in technical heptachlor (Cochrane et al. 1970). Chlordane has been registered with the federal government since 1948 as an economic poison. It has been widely used as an insecticide and to a lesser extent, as a herbicide. Since its insecticidal efficacy includes pests of turf and lawns as well as household pests, its usage tends to bring this chemical in close proximity to humans. The objective of this article is to report the discovery of trans-nonachlor in human adipose tissue and to provide a preliminary assessment of its geographic distribution in the United States.

Included in PB-276 894, Journal articles on pesticide chemical analysis. Group 6.