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Date/Time:  5/16/21 12:58 GMT

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

Chemical name: 2-Hydroxy-4-n-octoxybenzophenone
CAS No.:1843-05-6
Molecular formular:C21H26O3
Molecular weight:326
Molecular structure

Appearance: Pale yellow crystalline powder
Melting point,℃:47-49
Purity (HPLC), %: ≥ 99
Ash, %: ≤0.1
Loss on Drying, %: ≤0.5
Transmittance 450nm≥90%

Solubility (20℃, g/100ml solvent)
Acetone:43 Chloroform:61 Ethanol:4 Ethyl Acetate:44 n-Hexane:12
Methanol:2 Methylene chloride:67 Toluene>50 Water<0.01

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, nontoxic , good compatibility,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 physical 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
phenol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee
info at
UV ABSORBER UV 531    CAS NO.1843-05-6
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