A process for the diazotisation of a heterocyclic or a weakly basic benzenoid amine which comprises reacting together in a continuous manner, in a reaction zone from which a product stream containing diazotised amine is continuously removed, the amine and an aqueous solution of nitrite ions in the presence of sulphuric acid, the proportions and concentrations of the amine, the aqueous solution of nitrite ions and the sulphuric acid being so arranged as to provide a working acid concentration in the reaction zone in which the diazotised amine is stable.
一种重氮化杂环胺或弱碱性
苯胺的工艺,包括在一个反应区内,连续地将胺和
亚硝酸根离子
水溶液在有
硫酸存在的情况下一起反应,从该反应区中连续地移出含有重氮化胺的产物流,胺、
亚硝酸根离子
水溶液和
硫酸的比例和浓度是这样安排的,以便在重氮化胺稳定的反应区内提供一个工作酸浓度。