organochlorine

A class of chemicals, such as DDT, PCBs, dioxin and lindane, that have been chlorinated. That is, they contain carbon, hydrogen and chlorine. Organochlorine chemicals affect the central nervous system and brain by interfering with transmission of nerve impulses. Organochlorine insecticides, fungicides, herbicides and other chemicals became widespread because they are inexpensive and effective. However, many accumulate in living tissue, remain there and in the environment up to several decades, and harm organisms that were not targeted (including humans). New research is showing that a number of organochlorines also mimic or block hormonal activity in wildlife and humans. Some organochlorines have been banned due to their acute and chronic toxicity, while others are restricted.