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Endosulfan
Physical-chemical properties: 1) Composition: Endosulfan is a mixture of two stereoisomers: alpha-endosulfan, endosulfan(I), stereochemistry 3α, 5aβ, 6α, 9α, 9aβ-, comprising 64 - 67% of the tech. grade; beta-endosulfan, endosulfan(II), stereochemistry 3α, 5aα, 6β, 9β, 9aα-, 29 - 32%. 2) Appearance: colorless crystals (tech., cream to brown, mostly beige). 3) Melting point: >=80oC (tech.); α: 109.2oC; β:213.3oC. 4) Vapor pressure: 0.83mPa (20oC) for 2:1 mixture of α- andβ-isomers. 5) S.g./density: c.1.8 (20oC) (tech). 6) Solubility: a) In water alpha-endosulfan 0.32, beta-endosulfan 0.33 (both in mg/L, 22oC) ; b) In ethyl acetate, dichloromethane, toluene 200, ethanol c.65, hexane c.24 (all in g/L, 20oC). 7) Stability: stable to sunlight, slowly hydrolysed in aqueous acids and alkalis,with the formation of diol and sulfur dioxide Applications: 1) Action: non-systemic insecticide and acaricide with contact and stomach action. 2) Uses: a) Control of potato beetles and cotton bollworms ; b) Also controls other sucking, chewing and boring insects and mites on a very wide range of crops; including maize, tobacco, vegetables, fruit (including citrus), vines, olives, ornamentals, cucurbits, tea, coffee, rice, cereals, sorghum, oilseed crops, sugar cane, alfalfa, mushrooms, forestry, glasshouse crops, etc. Product Group: Endosulfan |