Optical Brightener CBS-X

Optical Brightener Tinopal CBS-X Chemical Name: 2,2′-([1,1′-Biphenyl]-4,4′-diyldi-2,1-ethenediyl)bis-benzenesulfonic acid disodium salt Formula C28H20S2O6Na2   MW      562 CAS# 27344-41-8 Synonym Name: Tinopal CBS-X, Fluorescent Brightener 351 (FB 351 ) , C.I.351, Fluorescent Brightener CBS-X Specification: Appearance Yellow powder Water content ≤5% Purity ≥99% Application: >Features: High solubility; Easy to formulate in all product types; No staining (pre-spot); Good…

Optical Brightener KCB

Optical Brightener Hostalux KCB Chemical Name: 1,4-Bis(benzoxazolyl-2-yl)naphthalene; Formula C24H14N2O2   MW      362 CAS# 5089-22-5 Synonym name: Hostalux KCB, Fluorescent Brightener 367 (FB 367) , c.i.367, Fluorescent Brightener KCB Specification: Appearance yellow crystalline powder Dosage 0.01-0.05% Melting point 210-212℃ Purity ≥99% Maximum UV Absorption Spectrum 370nm Application: Optical brightener KCB mainly as plastic films, injection-molded materials, EVA…

Optical Brightener KSN

Optical Brightener Hostalux KSN Chemical Name: 4.4-bis(5-methyl-2-benzoxoazol)-ethylene Formula C29H20N2O2 MW      442 CAS# 5242-49-9 Synonym name: Hostalux KSN, Fluorescent Brightener 368 (FB 368) , c.i.368, Fluorescent Brightener KSN Specification: Appearance Pale yellow powder Dosage 0.01-0.05% Melting point 269-271℃ Application: > KSN and OB-1 share similar chemical structure, while KSN has better whitening effect on PC…

optical brightener ob-1

Optical Brightener Eastobrite OB-1 Chemical Name: 2,2′-(vinylenedi-p-phenylene)bisbenzoxazole Formula C28H18N2O2   MW      414 CAS# 1533-45-5 Synonym name: Fluorescent Brightener 393 (FB 393 ) , C.I.393,  Fluorescent Brightener OB-1, Eastobrite OB-1 Specification: Appearance yellowish or greenish powder Melting point 357-359℃ Solubility (g/100 g solution) at 20° C: Acetone <0.1 Chloroform <0.1 Hexane <0.1 Methanol <0.1 Water…

Optical Brightener OB

Optical Brightener OB, Uvitex/Tinopal OB Chemical Name: 2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole) Formula C26H26N2O2S   MW      430 CAS# 7128-64-5 Synonym Name: Uvitex Ob, Tinopal OB, Fluorescent Brightener 184 (FB 184) , c.i.184, Fluorescent Brightener OB Specification: Appearance Slight greenish yellow powder Dosage 0.01-0.05% Melting point 196-200℃ Purity ≥99% Solubility (g/100 g solution) at 20° C: Acetone 0.5 Chloroform…