实验表明，在样品中加入氢氧化钠，样品中的4 -氨基偶氮苯和新鲜配制的连二亚硫酸钠发生反应，使4 -氨基偶氮苯的碳碳双键断裂。
The results showed, in the presence of sodium hydroxide, 4-aminoazobenzene could react with fresh sodium dithionite solution, and broke the carbon - carbon double bond of 4-aminoazobenzene.
并对反应机理进行推测，结果表明在反应中活性物种在分子键的断裂及苯环的氧化等方面起到重要的作用。
Speculating reaction mechanism shows that the active species plays an important role in the reaction of molecular dissociation and the oxidation of the benzene rings.
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