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

BASF Tinuvin 328 Benzotriazole UV Absorber

BASF Tinuvin 328 is a high-performance benzotriazole-based UV absorber from the Tinuvin series, offering exceptional photostability and broad-spectrum UVA/UVB protection for polymers, coatings, and adhesives. It prevents photooxidative degradation, maintains color fidelity, and enhances long-term weatherability without compromising clarity or compatibility.
  • basf tinuvin 328 benzotriazole uv absorber_ef1ba723
  • basf tinuvin 328 benzotriazole uv absorber_ef1ba723

Features Of BASF Tinuvin 328 Benzotriazole UV Absorber

  1. Highly effective UV absorber specifically designed for protection against UV-A and UV-B radiation.

  2. Excellent compatibility with a broad range of polymers including polyolefins, styrenics, and engineering plastics.

  3. Good thermal and hydrolytic stability, enabling robust performance during high-temperature processing.

  4. Low volatility and minimal migration, supporting long-term stabilization in demanding applications.

  5. Non-discoloring and chemically stable under typical formulation and service conditions.

Typical Applications Of BASF Tinuvin 328 Benzotriazole UV Absorber

  1. Automotive interior and exterior plastic components (e.g., dashboards, bumpers, trim).

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

  3. Packaging films and containers requiring extended UV resistance and clarity retention.

  4. Coatings and inks for industrial and decorative applications exposed to sunlight.

  5. Technical textiles and geotextiles where prolonged outdoor weathering resistance is critical.

Specifications Of BASF Tinuvin 328 Benzotriazole UV Absorber

Chemical TypeBenzotriazole-based UV absorber
Product FormFree-flowing crystalline powder
AppearanceOff-white to pale yellow crystalline solid
Molecular Weight350.4 g/mol
Melting Point135–139 °C
Solubility (in Toluene)~150 g/L at 20 °C
UV Absorption Maxima310 nm and 360 nm (in ethanol)
Primary ApplicationsPolymer stabilization, coatings, adhesives, and sealants


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