UV ABSORBER UV 531 CAS NO.1843-05-6

Supplier Info.

Chemical name: 2-Hydroxy-4-n-ocone
CAS No.: 1843-05-6
Molecular formula: C21H26O3
Molecular weight: 326
Appearance: Pale yellow crystaler
Melting point,degree: 47-49
Purity (HPLC), %: 99 min.
Ash, %: 0.1 max.
Loss on Drying, %: 0.5 max.
Transmittance 450 nm 90% min.
500nm 95% min.
UV ABSORBER HOSORB-531 is a light stabilizer with good performance, capable of absorbing the UV radiation of 240-340 nm wavelength with the characteristics of light color, noncompatibility,small mobility, easy processing etc. It can protect the polymer to its maximum extent, helps to reduce the color. It can also delay the yellowing and obstacle the loss of its sical function. It is widely applied to PE,PVC,PP,PS,PC organic glass, polypropylene fiber, ethylene-vinyl acetate etc. Moreover, it has very good light-stability effect on drying nol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee etc. info at hhochem. com