Synonyms: 2,7-Naphthalenedisulfonic acid, 4,4-1,4-phenylenebisimino6-4-(2-aminoethyl)-1-piperazinyl-1,3,5-triazine-4,2-diyliminobis5-hydroxy-6-(1-sulfo-2-naphthalenyl)azo-, sodium salt;1,4-Bis-[4-[4-(2-aminoethyl)-piperazine-1-yl]-6-[6-(1-sulfo-naphthalene-2-ylazo)-5-hydroxy-2,7-disulfo-naphthalene-4-ylamino]-1,3,5-triazine-2-ylamino]-benzene sodium salt;tetrasodium dihydrogen 1,1''-dihydroxy-8,8''-[p-phenylbis(imino-{6-[4-(2-aminoethyl)piperazin-1-yl]}-1,3,5-triazine-4,2-diyl-imino)]bis(2,2'-azonaphthalene-1',3,6-trisulfonate)