Name: BASF Tinuvin 329 Benzotriazole UV Absorber
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of BASF Tinuvin 329 Benzotriazole UV Absorber

Highly effective UV absorber specifically designed for protection against long-wave UVA radiation (320–400 nm).
Excellent thermal and hydrolytic stability, enabling reliable performance in demanding processing conditions.
Low volatility and high compatibility with a broad range of polymers, including polyolefins, styrenics, and engineering plastics.
Non-discoloring and chemically inert under normal use conditions, preserving substrate clarity and color fidelity.
Proven long-term photostabilization performance in outdoor applications exposed to intense sunlight and weathering.

Typical Applications Of BASF Tinuvin 329 Benzotriazole UV Absorber

Polypropylene (PP) fibers and nonwovens used in geotextiles, agricultural covers, and automotive interiors.
Polycarbonate (PC) and ABS components for exterior automotive parts, lighting housings, and façade elements.
Coated and laminated packaging films requiring UV protection for printed graphics and barrier integrity.
Outdoor construction profiles and window systems based on PVC, ASA, and PMMA blends.
UV-curable coatings and inks where synergistic stabilization with HALS is employed.

Chemical Type	Benzotriazole derivative
Product Form	Off-white to light yellow crystalline powder
Appearance	Free-flowing crystalline solid
Molecular Weight	351.4 g/mol
Melting Point	130–135 °C
Solubility (in Toluene)	Approx. 25 g/L at 20 °C
Primary Applications	Plastics, coatings, adhesives, and elastomers
Key Features	UVA absorption, thermal stability, polymer compatibility

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