1,4-Benzenediamine, N,N-dimethyl-, sulfate (1:1) 536-47-0 99-98-9 AI3-16145 EINECS 208-636-2 N,N-Dimethyl-p-phenylenediamine, sulfate (1:1) N,N-Dimethylbenzene-1,4-diammonium sulphate (1:1)