1,4-Benzenediamine, N,N-dimethyl-, sulfate (2:1) 60160-75-0 99-98-9 EINECS 262-092-0 N,N-Dimethyl-1,4-benzenediamine sulfate (2:1) N,N-Dimethyl-p-phenylenediamine hemisulfate N,N-Dimethyl-p-phenylenediamine sulfate N,N-Dimethylbenzene-1,4-diammonium sulphate (2:1) p-Phenylenediamine, N,N-dimethyl-, hemisulfate