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

BASF Tinuvin 329 Hydroxyphenylbenzotriazole UV Absorber

BASF Tinuvin 329 is a premium hydroxyphenyl benzotriazole UV absorber offering dual-peak protection for demanding outdoor applications. This high-efficiency stabilizer delivers exceptional UV resistance while maintaining material clarity, making it ideal for engineering plastics, protective coatings, and durable films exposed to harsh environmental conditions.

Features Of BASF Tinuvin 329 Hydroxyphenylbenzotriazole UV Absorber

  1. Dual-Peak Protection - Optimal absorption at 301nm and 343nm wavelengths

  2. Thermal Resilience - Stable performance above 150°C processing temperatures

  3. Permanent Performance - Low migration ensures long-term effectiveness

  4. Synergistic Boost - 50% enhanced durability with HALS stabilizers

  5. Regulatory Compliance - Meets strict food contact and environmental standards

Typical Applications Of BASF Tinuvin 329 Hydroxyphenylbenzotriazole UV Absorber

  1. Automotive Components - Protection for lighting systems and exterior parts

  2. Building Materials - Weather resistance for construction panels and profiles

  3. Flexible Packaging - UV stabilization for films and containers

  4. Protective Coatings - Long-term durability for industrial finishes

  5. Electronic Enclosures - UV protection for device housings

Specifications Of BASF Tinuvin 329 Hydroxyphenylbenzotriazole UV Absorber

Chemical Name
2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol
CAS Number
3147-75-9
Molecular Weight
323 g/mol
Appearance
Pale yellow powder
Melting Point
103-105°C
Flash Point
>150°C
Density (20°C)
1.18 g/cm³
Vapor Pressure (20°C)
1E-5 Pa
Bulk Density
130-200 g/l
Solubility (20°C)
Acetone:9 g/100g / Dichloromethane:38 g/100g / Water:<0.01 g/100g
UV Absorption Peaks
301 nm & 343 nm (ε=15,910 L/mol·cm)
Recommended Dosage
0.1-1.0% (on binder weight)


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