Synonyms: 2-Stilbenesulfonicacid, 4-(2H-naphtho[1,2-d]triazol-2-yl)-, phenyl ester (6CI,7CI,8CI);2H-Naphtho[1,2-d]triazole, benzenesulfonic acid deriv.; C.I. 509300; C.I.Fluorescent Brightener 70; Phenyl2-(4-stilbyl)naphtho[1',2':4,5]-1,2,3-triazole-2-sulfonate; Tinopal PCR;Tinopal PCRP; Tinopal RSRR