Synonyms: 1,4-Benzenedisulfonicacid,2,2'-[1,2-ethenediylbis[(3-sulfo-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazine-4,2-diyl]imino]]bis-,hexasodium salt (9CI);2,2'-(1,2-Ethenediyl)bis[5-[[4-(diethylamino)-6-[(2,5-disulfophenyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulfonicacid] hexasodium salt; Hexasodium2,2'-[vinylenebis[(3-sulfonato-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazine-4,2-diyl]imino]]bis[benzene-1,4-disulfonate]