1,4-Benzenediamine, N'-[4-(dimethylamino)phenyl]-N,N-dimethyl- 4,4'-Bis(dimethylamino)diphenylamine 637-31-0 Bindschedler's green leuco base C.I. 76125 Diphenylamine, 4,4'-bis(dimethylamino)- NSC56921 p,p'-(Tetramethyldiamino)diphenylamine