Chemical indicators : appearance Light yellow crystalline powder needle) 
content ≥99%
melting point 47-49°C
ash <0.1%
transmission 450nm>90% 500nm>95%
Solubility (25 ° C) (g/100g solvent) Acetone : 74-: 72 methanol : ethanol (95%) : 2.6 heptane : 40 n-hexane : 40.1 

Characteristics and uses :

UV absorbers UV-531 is a high performance and efficient Anti-aging agents, can absorb UV 240-340 nanometers, with light color, nontoxic, good compatibility, small relocation and easy to process characteristics. It is the largest polymer protective effect, and help to reduce the color, while delaying and obstructing the yellowed loss of physical properties. It is widely used to PE, PVC, PP, PS, PC, PMMA, PP fibers and ethylene

Storage and packaging :

UV absorbers UV-531 non-toxic, non-flammable and difficult to burglary, corrosion, good storage stability.
inner packing:20kg/plastic-lined carton