Synonyms:
6,6'-bimetanilic acid ; 2,2'-disulfonic acid benzidine ; benzidine 2,2 disulfonic acid ; 2,2'-disulfobenzidine ; benzidine-2,2'-disulphonic acid ; 2,2'-benzidinedisulfonic acid ; 2,2'-benzidinedisulf ; 2,2'-disulfo-benzidin ; bdsa ; benzidinedisulphonicacid