Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Rianox RIANOX UV-234 Benzotriazole UV Absorber

Rianox RIANOX UV-234 is a high-performance benzotriazole-based UV absorber from Rianox’s specialty additives series, offering exceptional photostability and thermal resistance for polymers, coatings, and adhesives. It effectively absorbs UV radiation (290–400 nm), preventing degradation while maintaining clarity and color fidelity in demanding applications.
  • rianox rianox uv 234 benzotriazole uv absorber_97000636
  • rianox rianox uv 234 benzotriazole uv absorber_97000636

Features Of Rianox RIANOX UV-234 Benzotriazole UV Absorber

  1. Highly effective UV absorber based on benzotriazole chemistry for long-term protection against UV-induced degradation.

  2. Excellent compatibility with polyolefins, ABS, polycarbonate, and other engineering thermoplastics.

  3. Low volatility and high thermal stability up to 250 °C, enabling use in high-temperature processing such as injection molding.

  4. Good lightfastness and minimal color development under prolonged UV exposure.

  5. Non-migrating formulation ensures durable surface protection without blooming or plate-out.

Typical Applications Of Rianox RIANOX UV-234 Benzotriazole UV Absorber

  1. Automotive exterior components including bumpers, grilles, and trim parts.

  2. Outdoor construction materials such as PVC window profiles and cladding panels.

  3. Consumer electronics housings requiring aesthetic retention and weather resistance.

  4. Garden furniture and leisure products exposed to full-spectrum sunlight.

  5. Industrial packaging films and containers requiring extended shelf-life under ambient light conditions.

Specifications Of Rianox RIANOX UV-234 Benzotriazole UV Absorber

Chemical TypeBenzotriazole derivative
Product FormFree-flowing crystalline powder
AppearanceOff-white to pale yellow crystalline solid
Molecular WeightApprox. 349 g/mol
Melting Point158–162 °C
SolubilitySoluble in chlorinated hydrocarbons, aromatic solvents, and hot polar solvents; insoluble in water
UV Absorption Max (in CHCl₃)≈ 340 nm
Primary ApplicationsPlastics stabilization for outdoor and automotive use


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