Product Name: Optical Brightener OB Chemical Name: 2,5-bis(5-tertbutyl-2-benzoxazolyl)thiophene Molecular Formula: C26H26N2O2S Molecular Weight: 430.2 UV absorption wavelength: 357nm Cas No.: 7128-64-5 C.I. No.: 184 EC No.: 230-426-4 Specifications: Appearance light yellowish green powder Melting Point 198-202 Purity â?¥98.5% Color Shade Blue Fineness â?§400 mesh Water insoluble Content â?¦0.5% Optical brightener OB is a kind of benzoxazole compound, it is odorless, hard to dissolve in water, soluble in paraffin, fat, mineral oil, wax and common organic solvents. It can be used for whitening thermoplastic plastics, PVC, PS, PE, PP, ABS, Acetate fiber, paint, coating, printing ink, etc. It can be added at any stage in the process of whitening the polymers and make the finished products emit a bright bluish white glaze. Package: 25kg per carton drum with double layer PE bag inside, or adjust according to clients demand. Storage: Store at cool and dry place. Expiry date: 24 months.
