Synonyms: 1,4-Benzenedisulfonicacid,2,2'-[1,2-ethenediylbis[(3-sulfo-4,1-phenylene)imino[6-[bis(2-hydroxyethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis-,hexasodium salt (9CI);Belofor 25-12;Blancofor BSU;Blankophor BSU;BlankophorBSU-PN 01;C.I. 406235;C.I. Fluorescent Brightener 264;1,4-Benzenedisulfonicacid,2,2'-[1,2-ethenediylbis[(3-sulfo-4,1-phenylene)imino[6-[bis(2-hydroxyethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis-,sodium salt (1:6);Phorwite UW;Phorwite UW Liquid;Rylux BSU;