Endosulfan is a chlorinated hydrocarbon insecticide and acaricide of the cyclodiene subgroup which acts as a poison to a wide variety of insects and mites on contact. Although it may also be used as a wood preservative, it is used primarily on a wide variety of food crops including tea, coffee, fruits, and vegetables, as well as on rice, cereals, maize, sorghum, or other grains. The EPA recommends not more than 74 ppb (part per billion) in lakes, streams, or rivers, and not more than 0.1 – 2 ppm (parts per million) on surfaces of agricultural products (except dried tea, <24>
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