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UV absorber UV-531

CAS NO. 1843-05-6
Product Name 2-hydroxy-4-n-octoxybenzophenone(UV absorber UV-531)
CAS NO. 1843-05-6
Molecular Formula C21H26O3
Structural Formula 1843-05-6
Molecular Weight 326.43
Purity(GC) ≥99%
Melting point 47-49℃
Ash ≤0.1%


450nm≥90% 500nm≥95%
Application UV absorbent UV-531 is a kind of high performance anti-aging additives, can absorb 240-340 nano UV light, with light color, non-toxic, good compatibility, small migration, easy processing and other characteristics. It has the greatest protective effect on the polymer and helps to reduce color, while delaying yellowing and retarding loss of physical properties. UV - 531 is widely used in PE, PVC, PP, PS, PC, organic glass, polypropylene fiber and ethylene vinyl acetate, 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. The dosage of 0.1% to 0.5%.It is used as the intermediate of reducing dyes, disperse dyes and reactive dyes.

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