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.
Dual-Peak Protection - Optimal absorption at 301nm and 343nm wavelengths
Thermal Resilience - Stable performance above 150°C processing temperatures
Permanent Performance - Low migration ensures long-term effectiveness
Synergistic Boost - 50% enhanced durability with HALS stabilizers
Regulatory Compliance - Meets strict food contact and environmental standards
Automotive Components - Protection for lighting systems and exterior parts
Building Materials - Weather resistance for construction panels and profiles
Flexible Packaging - UV stabilization for films and containers
Protective Coatings - Long-term durability for industrial finishes
Electronic Enclosures - UV protection for device housings
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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