A mixed solvent, naphtha and petroleum ether in certain proportions was used in synthesizing 2-ni-troaniline-4-sulfonic acid, the yield of the product >91 % , solvent recovery >95%.

• 以溶剂汽油和石油醚按一定比例复配成混合型溶剂,用该溶剂合成了2-硝基苯胺-4-磺酸。产品收率在的91%25以上,溶剂回收率在95%25以上。