Analysis of UV absorber UV-531

UV-531.Chemical name: 2-hydroxy-4-n-octyloxybenzophenone Molecular formula: C21H26O3 CaS NO. 1843-05-6 Main chemical specifications: Appearance light yellow needle crystal powder content ≥99% Melting point 47- 49°C Ash content <0.1% Light transmittance 450nm>90% 500nm>95% Solubility (25°C) (g/100g solvent) Acetone: 74 Benzene: 72 Methanol: 2 Ethanol (95%): 2.6 n-heptane :40 Hexane: 40.1 Properties and Uses: UV absorber UV-531 is an excellent anti-aging additive with excellent performance. It can absorb 240-340 nm UV light. It has light color, non-toxicity and good compatibility. It is characterized by small mobility and easy processing. It provides maximum protection for the polymer and helps to reduce color while retarding yellowing and retarding physical property loss. It is widely used in PE, PVC, PP, PS, PC, plexiglass, polypropylene fiber and ethylene vinyl acetate. It also provides good light stability for dry phenolic and alkyd varnishes, polyurethanes, acrylics, epoxies and other air drying products, as well as automotive finishing paints, powder coatings, polyurethanes, and rubber products.

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