Product ClassïOptical Brightening Agent For Plastic Product NameïOptical Brightening Agent OB Chemical Nameï2,5'-Bis[2-(5-tert-buty l-2 benzoxazoly)thiophene CAS No.ï7128-64-5 C.I. No.ï184 Structural Formula Molecular FormulaïC26H26N2O2N2 Molecular Weightï430 Technical IndexïAppearance: slight greenish yellow powder  Melting Point:200-202°C  Purity:99% UsesïMainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, paint and ink, etc. PrecautionïThe information of our products is for reference only. We are not responsible for any unexpected results or patent dispute caused by it.