UV-9 Molecular Formula C14H12O3 CAS No. 131-57-7 Molecular Weight 228.25 Other Names 2-dihydroxy-4-methoxy-benzophenone Appearance Light Yellow Crystalline Powder Melting Point 62-64°C Absorption Spectrum 280-340nm Packaging 25KG Cardboard Drum Storage Kept in dry , well-ventilated place Usages: Absorbing medium UV ;Improving weatherability and prolonging life of products (especially for cosmetics, coatings and plastic ). Preventing transparent liquid from yellow and changing color .