The route and experiments for synthesis of carbazole violet are described in detail. The process is characterized by using reagent NaHS to reduce 3 nitro N ethyl cabazole in about 2.5 hours.

• 详细介绍了咔唑紫的合成路线及实验过程。采用硫氢化钠做还原剂；对3硝基N乙基咔唑进行还原；是本合成路线的特点；反应时间约2.；5h。