酸性媒介棕RH的合成工艺研究  

Researches of Synthetic Process of Acid Mordant Brown RH

作　　者：苏琼[1] 

机构地区：[1]西北民族学院化学系,甘肃兰州730030

出　　处：《西北民族学院学报（自然科学版）》2002年第4期8-11,共4页Journal of Northwest Minorities University(Natural Science )

摘　　要：酸性媒介棕RH是以4 硝基 2 氨基苯酚为原料经重氮化后与2,4 二氨基苯磺酸钠偶合制得的。The synthetic process of acid mordant brown RH is studied. The effects of ratio of reagents , binitrogenation temperature, neutralization opportunity ,coupling time and consumption of salt on reaction are investigated. The optimum reaction condition is the molar ratio of 4 nitro 2 aminophenol to 2,4 diamino benzene sulfonic acid sodium of 1∶1.02, temperature of 0～5 ℃, PH of mixing of 4.5～5, coupling time of 1h, and the amount of salt of 35 g ,under which the color of the dye is good and strong and yield is also high.

关 键 词：RH 酸性媒介棕 合成工艺 重氮化 偶合 酸性媒介染料 4-硝基-2-氨基苯酚 

分 类 号：TQ615.2[化学工程—精细化工]