Process for purifying technical grade
1,1-bis(chlorophenyl)-2,2,2-trichloroethanol
    4.
    发明授权
    Process for purifying technical grade 1,1-bis(chlorophenyl)-2,2,2-trichloroethanol 失效
    纯化工业级1,1-双(氯苯基)-2,2,2-三氯乙醇的方法

    公开(公告)号:US5075512A

    公开(公告)日:1991-12-24

    申请号:US618635

    申请日:1990-11-27

    IPC分类号: C07C29/86 C07C33/46

    CPC分类号: C07C33/46 C07C29/86 C12C11/02

    摘要: A process for purifying technical grade 1,1-bis(chlorophenyl)-2,2,2-trichloroethanol for reducing its content of DDT related impurities, based on dissolving technical grade dicofol in a mixture of water and a first compound selected from the group formed by ethylene glycol monomethyl ether, acetonitrile, hydroxyacetone or dimethyl sulfoxide, to obtain a solution which is extracted with n-decane, separating the resulting phases. The dicofol extracted with the n-decane is recovered by reextraction of the n-decane phase with mixtures of said first compound and water and the purified dicofol is recovered from the polar phase.

    摘要翻译: 一种纯化工业级1,1-双(氯苯基)-2,2,2-三氯乙醇的方法,用于降低其滴滴涕相关杂质的含量,这是基于将工业级三氯包甲溶解在水和选自组中的第一种化合物 由乙二醇单甲醚,乙腈,羟基丙酮或二甲基亚砜形成,得到用正癸烷萃取的溶液,分离所得相。 用正癸烷提取的三氯杀螨醇通过用所述第一化合物和水的混合物再加入正癸烷相并从极性相中回收纯化的三氯杀螨醇来回收。