Synthesis of o phenylenediamine from o nitroaniline by catalytic hydrogenation at lower pressure was studied. 以邻硝基苯胺为原料，采用低压催化加氢还原技术合成邻苯二胺。
Polychlorobiphenyls in dye intermediate 2,6 _ dichloro _ 4 _ nitroaniline were analyzed by GC-MS in SIM method. 用气相色谱-质谱联用仪,采用选择离子的方法对染料中间体2,6_二氯_4_硝基苯胺中的多氯联苯进行分析。
The dye intermediate 2,6-dichloro-4-nitroaniline was prepared by direct chloridization of nitroaniline in the solution of hydrochloric acid. 在盐酸溶液中 ,以对硝基苯胺为原料 ,采用直接氯化法制取了染料中间体2,6-二氯 -4 -硝基苯胺。
Cellulose was modified using cyclododecylamine and was used as HPLC stationary phase for the separation of three nitroaniline isomers.The result showed that the separation effect was good. 利用自制的环十二烷基胺对纤维素进行了改性,考察了将其作为高效液相色谱固定相对硝基苯胺3种异构体的分离,结果表明分离效果良好。
