Name:Ultraviolet absorber UV-531
Synonym : 2-Hydroxy-4-Octyloxy Benzophenone
CAS # : 1843-05-6
Product Standard Code : Q/XJ·j1-2001
Structural Formula :

Property : Yellowish crystals, freely soluble in benzene, n-hexane, acetone, slightly soluble in ethanol, very slightly soluble in ethane dichloride.
Specification :
Content (calculated as dry basis)≥99 %
Boiling Point: 47~49 °C
Ash: % ≤ 0.1
Light Transmittance: 450nm ≥ 90% 500nm ≥ 95 %
Use :
It is capable of strongly absorbing ultraviolet radiation with the wavelength of 300~375nm, and has low volatility, being almost colorless. It is compatible with most of the polymers, particularly with polyolefin, also applicable to polystyrene, polyester, acrylic fiber etc. with the general dosage of 0.2-0.6%.
Package : High-pressure cardboard drums lined with plastic membrane bags, with the capacity of 20 kg.
Precaution : Low toxicity kept away from moisture and fire in transportation; stored and transported as common chemicals with relatively good stability.

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