UV531 UV absorbers 
 First, the chemical name: 2 - hydroxy -4-- is octyloxy benzophenone 
 Division Type: C21H26O3 

 Second, the key indicators: 
 Appearance: light yellow needle crystal powder 
 Content: ≥ 99% 
 Melting point :46-49 ℃ 
 Ash: ≤ 0.1% 
 Transmittance: 450nm> 90% 
 500nm> 95% 
 Solubility (25 ℃ g/100g solvent): 
 Acetone: 74 
 Benzene: 72 
 Methanol: 2 
 Ethanol (95%): 2.6 
 N-heptane: 40 
 Hexane: 40.1 

 Third, the characteristics and uses: 
 UV absorbent UV-531 is a high-performance anti-aging agent, can absorb 240-340 nm UV light, 
 With a light color, non-toxic, good compatibility, mobility, easy processing characteristics. It has the greatest protective effect of the polymer, and help to reduce the color, while delaying yellowing and loss of physical properties of block. It is widely used for PE, PVC, PP, PS, PC, PMMA, polypropylene and ethylene vinyl acetate fibers and so on. But also for dry phenolic and alkyd varnish, polyurethane, epoxy, acrylic and other products, and automotive repair air-drying paint, powder coating, polyurethane, rubber products, as they provide good light stability effect. 

 Fourth, adding amount: 
 By 0.1-0.5% of total 

 V, storage and packaging specifications: 
 25 kg / barrel. UV absorbent UV-531 non-toxic, non-flammable, non-explosive, non-corrosive, good storage stability. 



 The above information is based on our experience, for reference, but given the formula, production, technology and construction factors, our company without any cover! 
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