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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
IPC分类号: B01D11/04 , C07C201/16 , C07C205/07 , C07C205/12
CPC分类号: B01D11/0492 , C07C201/16 , Y10S210/909
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。