disodium 4,4'-bis[[6-anilino-4-[(2-hydroxyethyl)methylamino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate Fluorescent Brightener 54 Fluorescent brightener PS-1 sodium 4-[3-(4-chlorophenyl)-4,5-dihydro-5-phenyl-1H-pyrazol-1-yl]benzenesulphonate Fluorescent Brightener Pf Fluorescent Brightener 368 Fluorescent brightener KB C.I.Fluorescent Brightener 151 (9CI) Fluorescent Brightener 353 Fluorescent Brightener 101 Disodium 4,4'-bis(2-sulfostyryl)biphenyl Fluorescent brightener PF-127 Fluorescent brightener OB-1T Fluorescent brightener PF-3 Fluorescent Whitener ER Fluorescent Brightener VBA PF-plastic fluorescent whitening agent Fluorescent whitening agent AC