Purification of PCNB by solvent extraction
    1.
    发明授权
    Purification of PCNB by solvent extraction 失效
    通过溶剂萃取纯化PCNB

    公开(公告)号:US5057222A

    公开(公告)日:1991-10-15

    申请号:US534895

    申请日:1990-06-08

    申请人: Gary A. Braden

    发明人: Gary A. Braden

    摘要: Pentachloronitrobenzene (PCNB) is purified by using a liquid-liquid extraction process with polar and nonpolar solvents to remove hexachlorobenzene (HCB). A variety of procedures, solvents and equipment may be employed to carry out the process. A process using a multiplate countercurrent liquid solvent extraction unit, and using DMF and octane as solvents for PCNB and HCB, respectively, is preferred.

    摘要翻译: 通过使用极性和非极性溶剂的液 - 液萃取方法纯化五氯硝基苯(PCNB)以除去六氯苯(HCB)。 可以使用各种程序,溶剂和设备来执行该过程。 优选使用多反向液体溶剂萃取单元,分别使用DMF和辛烷作为PCNB和HCB的溶剂的方法。