Synonyms: 2-Stilbenesulfonicacid, 4-(2H-naphtho[1,2-d]triazol-2-yl)-, sodium salt (6CI,7CI);Benzenesulfonic acid, 5-(2H-naphtho[1,2-d]triazol-2-yl)-2-(2-phenylethenyl)-,sodium salt (9CI); C.I. Fluorescent Brightening Agent 46, sodium salt (8CI);2H-Naphtho[1,2-d]triazole, benzenesulfonic acid deriv.; 2-(4-Styryl-3-sulfophenyl)-2H-naphtho[1,2-d]triazolesodium salt; 4-(Naphtho-1',2';4,5-triazol-2-yl)-2-sulfostilbene sodium salt;C.I. 40645; C.I. Fluorescent Brightener 46; Fluorescent Brightener 46; PylaklorWhite S 15A; Sodium 4-(2H-naphtho[1,2-d]triazol-2-yl)stilbene-2-sulfonate;Tinopal RBS; Tinopal RBS 200