Chemical name: N-Hexadecyl-3, 5-di-tert-butyl-4-hydroxybenzoate CAS No.: 67845-93-6 Molecular formula:C31H54O3 Molecular weight: 475 Appearance: White powder Purity (HPLC), %: 99min. Melting point,degree: 59-63 Ash, %: 0.1max. Loss on Drying, %: 0.5max. UV2908 belongs to the class of hindered hydroxybenzoate light stabilizer. It is widely used in polyolefins such as PP, PE, polycarbonate and the systems containing flame retardants and thioesters etc.� It� can be used alone or in combination with benzophenone UV stabilizer or phosphite antioxidant, showing good synergistic effect.