DDT and Organochlorine Insecticides

Many organochlorine insecticides were widely used in decades past, but are now banned because of their toxicities and, particularly, their accumulation and persistence in food chains. Now largely of historical interest, these banned insecticides include methoxychlor (once a popular replacement for DDT), dieldrin, endrin, chlordane, aldrin, heptachlor, toxaphene, lindane, and endosulfan (one of the last to be phased out of general use). 

FIGURE 4.7 Two examples of organochlorine insectides. DDT was the most notable of these because of its history of environmental effects. Endosulfan has been one of the last of these to be phased out of use. 

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