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Information @ a Glance

  • Dieldrin is a man-made chemical used as an insecticide.
  • Aldrin and dieldrin were discovered by Julius Hyman. Hyman worked for Velsicol Corporation, headquartered in Memphis, Tennessee, and helped discover chlordane.
  • Aldrin, dieldrin, and endrin are cyclodienes made by a chemical process known as the Diels-Alder reaction, hence their names.
  • Dieldrin is an organochlorine insecticide that is structurally very similar to Aldrin.
  • Dieldrin occurs as white crystals or tan-coloured flakes, odourless or with mild chemical odour.
  • The trade names used for dieldrin include Alvit, Dieldrix, Octalox, Quintox, and Red Shield.
  • Pure aldrin and dieldrin are white powders with a mild chemical odor. The less pure commercial powders have a tan color.
  • Dieldrin, a stereoisomer of endrin, was typically produced by the epoxidation of aldrin with peracetic or perbenzoic acid.
  • Dieldrin was manufactured by the epoxidation of aldrin. The epoxidation of aldrin was obtained by reacting it either with a peracid or with hydrogen peroxide and a tungstic oxide catalyst .
  • Water treatment technologies such as granular activated carbon and reverse osmosis can reduce levels of aldrin and dieldrin in drinking water supplies.
  • Aldrin and its epoxide dieldrin are largely used in countries with hot climates, both as agricultural insecticides and for the control of tsetse fly, the vector of human and animal trypanosomiasis, and other insects which are sources of various human and animal diseases.
  • Dieldrin, the second most commonly used agricultural pesticide in the U.S. in the 1960s (after DDT) and banned in the U.S. in 1987, is an acutely toxic carcinogenic and endocrine-disrupting compound.
  • Dieldrin can evaporate slowly from surface water or soil. In the air, dieldrin changes to photodieldrin within a few days.
  • While estimates of production of aldrin and dieldrin vary, it is probable that their combined production rose to a peak of about 20 million pounds a year in the mid-1960s and then declined.
  • Aldrin/ dieldrin ranked second—after DDT— among agricultural chemicals used in the United States in the 1960s.

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