METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.

方法以对硝基苯甲酰氯为起始,缩、还、重化、偶、成盐等反应制得巴柳二钠。

According to the problems in dyes production,the role of cupric ion in coupling-cupric complexation was discussed,and the chelated forms of formazane reactive dyes were introduced.

并结生产和应用中的实际问题,对偶-一步完成中盐的作用、甲物的啮形式及其性能等研究成果进行了介绍。