【摘要】 本文论述了电解法将２，５－二氯硝基苯还原为四氯氢化偶氮苯，进而转位、重排生成２，２＇，５，５＇－四氯联苯胺的原理、工艺条件及实验方法更多还原

【Abstract】 Using electrolytic reduction, 2,5-dichloronitrbenzene in alkaline emulsion gives tetrachlorohydrazobenzene, then by conversion and rearrangement, it forms 2, 2’, 5, 5’tetrachlorobenzidine. The paper presents the principle, technological conditions and test methods of the electrolytic reduction.更多还原