摘要
本文是以邻硝基苯胺为初始原料,以浓硫酸(96-98％)为磺化剂,选用氯苯或氯苯与邻二氯苯的混合溶剂作磺化介质来制备4-氨基-3-硝基苯磺酸,产品收率在90％左右。
This paper is about preparation of 4-amino-3-nitro-bcnzcnsulfonic acid by the route that o-nitroaniline is sulfonatcd with sulphuric acid in organic solvent i.e. chlorobcnzcne or the mixed solvent of chlorobcnzcne and o-dichlorobenzcne。The yield is close to 90 percent。
