UV-531 / BP-12 / Octabenzone    (Benzophenone UV Absorber )
Chemical name : 2-Hydroxy-4-n-octoxybenzophenone
Introduction : UV- 531 is an ultraviolet light absorber (UVA) of the benzophenone class, imparting good light stability for plastics and other organic polymers. Due to its highly effective broad UV absorption properties and excellent polymer compatibility, UV- 531 offers maximum polymer protection and low color contribution, retards yellowing and loss of physical properties.
CAS NO : 1843-05-6
Empirical Formula : C21H26O3
Physical Properties
Molecular Weight : 326
Appearance : light yellow powder
Melting Range : 47-49 °C
Assay : 99% Min.
Volatile Matter : 0.5% Max.
Specific Gravity(20 °C) : 1.16g/cm3
 
Usage: UV absorber UV - 531 is a kind of performance is remarkable effective anti aging additives, absorbing, 240-340 nm UV light color light, non-toxic, good compatibility, mobility is small, easy processing, etc. It has the greatest protection effect to polymer, and help to reduce the colour and lustre, delay the yellowing and block physical performance loss at the same time. It is widely used in PE, PVC, PP, PS, PC, organic glass, polypropylene fiber and ethylene vinyl acetate, etc., and for dry phenolic and alcoholic acid varnish, polyurethane, acrylic acid, epoxy and other air drying products and automotive repair paint, powder coating, polyurethane, rubber products, etc., provides them with good light stability effect. Dosage of 0.1% 0.5%