(1,1'-Biphenyl)-4,4'-diamine, 3,3'-dimethoxy-, dihydrochloride 119-90-4 20325-40-0 3,3'-DIMETHOXYBENZIDINE DIHYDROCHLORIDE 3,3'-Dimethoxy-(1,1-biphenyl)-4,4'-diamine dihydrochloride 3,3'-Dimethoxy-4,4'-diaminobiphenyl dihydrochloride 3,3'-Dimethoxybiphenyl-4,4'-ylenediammonium dichloride Benzidine, 3,3'-dimethoxy-, dihydrochloride C.I. Disperse Black 6 dihydrochloride CCRIS 998 EINECS 243-737-5 o-Dianisidine dihydrochloride