optical brightener OB

Product Name Optical Brightening Agent OB Chemical Name 2,5'-Bis[2-(5-tert-buty l-2 benzoxazoly)thiophene CAS No. 7128-64-5 C.I. No. 184 Molecular Formula C26H26N2O2N2 Molecular Weight 430 Technical Index Appearance:slight greenish yellow powder Melting Point:200-202°C Purity:≥99% Uses Mainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, paint and ink, etc. Pplastics:about 200g per 1000kgs Packing 25 kg per fiber drum