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Dieldrin

Dieldrin has been used in agriculture for the control of soil insects and several insect vectors of disease but this latter use has been banned in a number of countries due to environmental and human health concerns.
Dieldrin along with aldrin was discovered by Julius Hyman, and associates in 1948. Dieldrin is manufactured by the epoxidation of aldrin which is obtained by reacting it either with a peracid, producing dieldrin and an acid byproduct, or with hydrogen peroxide and a tungstic oxide catalyst, producing dieldrin and water. Peracetic acid and perbenzoic acid are generally used as the peracid acid. When using a peracid, the epoxidation reaction is performed noncatalytically or with an acid catalyst such as sulfuric acid or phosphoric acid. When using hydrogen peroxide, tungsten trioxide is generally used as the catalyst.
Dieldrin is banned in many countries, including Bulgaria, Ecuador, the EU, Hungary, Israel, Portugal, Singapore, Sweden, and Turkey and its use is severely restricted in many countries, including Argentina, Austria, Canada, Colombia, Cyprus, India, Japan, New Zealand, Pakistan, USA and Venezuela.

 


Structure formula of Dieldrin


3D structure of Dieldrin