Also Called: [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dichloro-, dihydrochloride; 3,3'-Dichlorobenzidine Dihydrochloride (see 3,3'-Dichlorobenzidine and Its Dihydrochloride); DCB; 3 , 3'-dichlorobenzidine dihydrochloride; [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dichloro-, dihydrochloride [3,3'-Dichlorobenzidine dihydrochloride, salts of; 3,3'-Dichloro(1,1'-biphenyl)-4,4'-diamine dihydrochloride; 3,3'-Dichlorobiphenyl-4,4'-ylenediamine dihydrochloride, salts of];3,3'-DICHLOROBENZIDINE DIHYDROCHLORIDE;N,N'-(3,3'-Dichlorobiphenyl-4,4'-diyl)diammonium dichloride;Salts of 3,3′-dichlorobenzidine;salts of 3,3′-dichlorobiphenyl-4,4′- ylenediamine;3,3'-Dichlorbenzidindihydrochlorid;[1,1'-Biphenyl]-4,4'-diamine, 3,3'-dichloro-, hydrochloride (1:2);3,3'-Dichloro[1,1'-biphenyl]-4,4'-diamine dihydrochloride;3,3'-dichloorbenzidine dihydrochloride;3,3'-Dichlorobenzidine hydrochloride;3,3'-二氯联苯胺二盐酸盐;3,3'-二氯联苯胺盐酸盐