1,4-Benzenediamine, N,N,N',N'-tetramethyl-, dihydrochloride 637-01-4 N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride N,N,N',N'-Tetramethyl-para-phenylenediamine dihydrochloride NSC36730 WLN: 1N1&R DN1&1 &GH 2 Wurster's reagent dihydrochloride p-Phenylenediamine, N,N,N',N'-tetramethyl-, dihydrochloride