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

BASF Tinuvin 328 UV Absorber

BASF Tinuvin 328 is a high-performance benzotriazole-based UV absorber from the Tinuvin series, widely used in plastics, coatings, and adhesives to prevent photodegradation. It offers excellent light stability, low volatility, and good compatibility with polymers like PVC, PS, and PC.
  • basf tinuvin 328 uv absorber_61f0b909
  • basf tinuvin 328 uv absorber_61f0b909

Features Of BASF Tinuvin 328 UV Absorber

  1. Highly effective benzotriazole-type UV absorber with strong absorption in the 270–380 nm range.

  2. Excellent compatibility with a broad range of polymers including polyolefins, PVC, polycarbonate, and ABS.

  3. Outstanding thermal and hydrolytic stability, enabling use in high-temperature processing such as injection molding and extrusion.

  4. Low volatility and minimal migration, ensuring long-term protection and surface integrity in demanding applications.

  5. Good lightfastness and synergistic performance when combined with hindered amine light stabilizers (HALS).

Typical Applications Of BASF Tinuvin 328 UV Absorber

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

  2. Outdoor building materials including window profiles, siding, and roofing membranes.

  3. Packaging films for agricultural mulch, food packaging, and industrial stretch wrap.

  4. Coatings and inks for outdoor signage, metal decoration, and architectural finishes.

  5. Technical fibers and geotextiles exposed to prolonged solar radiation.

Specifications Of BASF Tinuvin 328 UV Absorber

Chemical TypeBenzotriazole derivative
Product FormOff-white to light yellow crystalline powder
AppearanceFree-flowing crystalline solid
Molecular Weight350.4 g/mol
Melting Point129–133 °C
Solubility (in Toluene)~50 g/L at 20 °C
UV Absorption Maximum (λmax)305–310 nm (in ethanol)
Primary ApplicationsPolymer stabilization against UV-induced degradation


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