The color reaction mechanism for 2,2-bis(p-methoxyphenyl )-1 ,1-dichloroethylene(DMDE) with H2SO4 is studied. The reaction is reversible,the color substance has relation with intermediate in electrophilic addition reaction.

• 本文对2,2-二(4-甲氧基苯基)-1,1-二氯乙烯(简称DMDE)与H_2SO_4显色反应的机理进行了探讨,证实了该反应为可逆反应,其显色产物与亲电加成反应的中间体有关;