This was a popular pesticide for crops like corn and cotton, based on 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro,endo,exo-1,4:5,8-dimethanonaphthalene. It is now classified as a POP. Under the Stockholm Convention on Persistent Organic Compounds, use of this chemical in Europe is subject to restrictions.

CAS Number: 60-57-1. A white, crystalline, persistent, chlorinated hydrocarbon insecticide that accumulates in and becomes toxic to vertebrates. Chemical formula = C12H8Cl6O. Molecular weight = 360.371 g/mol.

An insecticide. Measured in µg/L or ppb. i-n-octyl phthalate colorless, oily liquid used as a plasticizer in plastic products manufacture.

Dieldrin, a critical pollutant, was used as a pesticide for veterinary uses and to control soil insects. In the U.S. and Canada, its use is now restricted to termite control. Dieldrin has a long half-life in shallow waters compared to most chlorinated organic compounds. It is acutely toxic and poses a potential carcinogenic threat to humans. This chemical enters the Great Lakes System from the air or contaminated sediments and has been detected in fish and wildlife in all of the Great Lakes.

Dieldrin is a chlorinated hydrocarbon originally produced by Bayer AG as an insecticide. The molecule has a ring structure based on naphthalene.