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三硫磷

三硫磷

CAS号:786-19-6
英文名:carbophenothion
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化合物简介
Carbophenothion also known as Stauffer R 1303 as for the manufacturer, Stauffer Chemical, is an organophosphorus chemical compound. It was used as a pesticide for citrus fruits under the name of Trithion. Carbophenothion was used as an insecticide and acaricide. Although not used anymore, it's still a restricted use pesticide in the United States. The chemical is identified in the US as an extremely hazardous substance according to the Emergency Planning and Community Right-to-Know Act.
基本信息
编号系统
物化性质
安全信息
生产方法及用途
生产方法
以氯苯、五硫化二磷、甲醛、乙醇、氯磺酸为主要原料,经下述步骤生产得三硫磷原油。
1.对氯苯磺酰氯的制备将氯磺酸加入反应锅,滴加氯苯,反应所得物料为对氯苯磺酰氯和氯磺酸、硫酸的混合物(磺化液)。
2.对氯硫酚的制备反应锅中加入水,用蒸气预热到回流,再加入铁粉搅拌下滴加上述磺化液得对氯硫酚。
3.对氯苯氯代甲硫醚的制备反应锅中,加入的浓盐酸在搅拌下加入甲醛滴加对氯硫酚的苯溶液得对氯苯氯代甲硫醚。
4.硫化物钠盐的制备向五硫化二磷中滴加无水乙醇,将反应物,滴加到碳酸氢钠的水溶液中,得到硫化物钠盐水溶液。
5.三硫磷的制备将上述硫化物钠盐水溶液加入反应锅,滴加对氯苯氯代甲硫醚。静置分层,取油层,用水洗涤,干燥即得三硫磷原油。
用途
三硫磷为优良的有机磷杀虫、杀螨剂,普遍应用于棉花、果树等作物,防治红蜘蛛、蚜虫等多种害虫。