Synthesing 3,4-dichloronitrobenzene from o-dichlorobenzenewith nitrating method is the first process and also one of important technology in manufaturing fluorochloroaniline.

• 由邻二氯苯经硝化合成3，4-二氯硝基苯是氟氯苯胺制备的第一步，也是关键性工艺。