1.Chemical name: 2-Hydroxy-4-Octyloxy Benzophenone Chemical Formula: C21H26O3 Structure: Molecular weight: 326 CAS NO.: 1843-05-6 2. General Specification: Appearance: light yellow needle crystalline powder Melting point: 47-49 degree centigrade Content: 99% min ASH: 0.1% max Transmittance: 450nm≥90% 500nm≥95% Solubility:( 25 degree centigrede) ( g/100g solvent) : Acetone: 74, Benzen: 72, Methanol: 2, Ethanol (95%): 2.6, N-heptane: 40, N-hexane: 40.1 3.Uses: Samsorb 531 is a kind of highly effective to resist to age. It can absorb ultraviolet in 240~340nm.It has many advantages, such as light colore, nontoxic, good solubility, easy processing and so on.. It protects polymers from UV radiation helping to preserve the original appeartance and physical integrity. It can be widely used for PE, PVC, PP, PS, PC, organic glass, polypropylene fiber, ethylene-vinyl acetate, etc. It provide good light stability effect on dry phenol aldehyde, alkyd vamishes, polyamino esters, acrylic acids, epoxides, other air products, automobile ?repairing paints, power coatings rubble articles, and so on. Its dosage is 0.1-0.5% based on polymer weight. It's approved to be used for food package in many countries. It's especially recommended in PE, PP, PVC, etc. 4.Packing and Storage: Nontoxic, non-flammable, non-explosive, non-corrosive and good storage stability. Cardboard drum inner lining plastic bag, each drum 20kg or 25kg net weight. Or according to customers' requirements.