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始原料,经缩合、还原、重化、偶合、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.

并结合生产和应用中的实际问题,对偶合-铜络一中铜盐的作用、甲铜络合物的啮合形式及其性能等研究果进行了介绍。