Name: Rianox RIANOX UV-531 Benzophenone UV Absorber
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Rianox RIANOX UV-531 Benzophenone UV Absorber

Highly effective broad-spectrum UV absorption in the 290–400 nm range, especially strong at UVA wavelengths.
Excellent compatibility with a wide range of polymers including polyolefins, PVC, PS, ABS, and acrylics.
Good thermal stability up to 220 °C, enabling use in high-temperature processing such as extrusion and injection molding.
Low volatility and minimal migration, ensuring long-term photostabilization performance in demanding applications.
Non-discoloring and chemically stable under normal storage and processing conditions.

Typical Applications Of Rianox RIANOX UV-531 Benzophenone UV Absorber

Chemical Type	Benzophenone derivative (2-Hydroxy-4-n-octyloxybenzophenone)
Product Form	Free-flowing light yellow crystalline powder
Appearance	Light yellow to pale yellow crystals or granules
Melting Point	47–51 °C
UV Absorption Max (λmax) in Ethanol	345–350 nm
Solubility	Soluble in common organic solvents (e.g., acetone, chloroform, toluene); low solubility in water
Primary Applications	Plastics, coatings, adhesives, inks, and synthetic fibers
Key Features	UV-A protection, polymer compatibility, thermal processability, low volatility

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E-mail: wangxingqiang@ericwchem.com
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15921782326
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China