Ddt is an organochlorine insecticide used mainly to control mosquito-borne malaria and as an agricultural insecticide. It is available in several different forms: aerosols, dustable powders, emulsifiable concentrates, granules, and wettable powers. It is a colorless crystalline substance that is practically insoluble in water, but highly soluble in fats and most organic solvents. For many years it was one of the most potent and widely used pesticidal chemicals. It was first synthesized in 1874 by Othmai Ziedler. In 1939, Swiss scientist Paul Herman Muller discovered its use as an insecticide, for which he was awarded the 1948 Nobel Prize. The United States began to produce large quantities of DDT (dichlorodiphenyl-trichloroethane) to control vector-borne diseases such as malaria and typhus abroad. It was widely used by ...

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