Light stabilizer UV-531
Chemical Name: Octabenzone, 2-Hydroxy-4-n-octyloxybenzophenone
Cas No. 1843-05-6
Empirical Formula : C21H2603
Molecular Weight : 326.44
Characteristics:
This product is a light stabilizer with good performance, capable of
absorbing the UV radiation of 240-340 nm wavelength with the
characteristics of light color, 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.
Application
It is widely applied to PE,PVC,PP,PS,PC organic glass, polypropylene fiber,
ethylene-vinyl acetate etc.
Its dosage is 0.1%-0.5%.
Technical Index
Appearance: Yellowish crystalline powder
Purity:≥99.0% by GC
Volatile matter:≤0.5%
Melting point: 47-49°C
Ash content:≤0.1%
Transmittance: 450nm 91.0%min
500nm 95.0%min
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