Description

2-Benzotriazol-2-Yl-4-(2,4,4-Trimethylpentan-2-Yl)Phenol is a high-performance benzotriazole derivative widely recognized for its exceptional efficacy as a UV absorber and light stabilizer. This compound is critical for protecting polymers and coatings from photodegradation, thereby extending product lifespan and maintaining aesthetic and mechanical properties. It is an essential additive for manufacturers in the plastics, coatings, and synthetic materials industries seeking reliable, long-term protection against ultraviolet radiation.

Application

• Polymer Stabilization: Primary UV absorber in polyolefins (PP, PE), PVC, polycarbonates, and engineering plastics to prevent yellowing, embrittlement, and loss of mechanical strength.
• Coatings and Paints: Key light stabilizer in automotive coatings, industrial paints, wood varnishes, and architectural coatings to enhance gloss retention and color stability.
• Adhesives and Sealants: Incorporated to prevent the degradation of adhesive films and sealant materials exposed to sunlight, ensuring long-term performance.
• Automotive Components: Used in plastic exterior parts, interior trim, and synthetic fibers to protect against UV-induced fading and cracking.
• Agricultural Films: Added to greenhouse films and mulch films to stabilize the polymer matrix against solar radiation, extending usable life.
• Packaging Materials: Protects plastic packaging from UV light, preserving the integrity and appearance of both the packaging and its contents.

Basic Information

Product Name	2-Benzotriazol-2-Yl-4-(2,4,4-Trimethylpentan-2-Yl)Phenol
CAS No.	52188-76-8
Molecular Formula	C20H25N3O
Molecular Weight	323.43 g/mol
Synonyms	2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol; UV-329; Tinuvin 329; 2-(2'-Hydroxy-5'-tert-octylphenyl)benzotriazole; Phenol, 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)-; Bumetrizole; Octrizole; Lowilite 29
EINECS	257-704-6

Quality Control

Our production of 2-Benzotriazol-2-Yl-4-(2,4,4-Trimethylpentan-2-Yl)Phenol adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity. Every lot is analyzed against rigorous internal specifications using advanced techniques like HPLC and GC. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are provided to guarantee the material meets the specific requirements of your application.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from light to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 99.0%
Melting Point	136 - 141 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Transmittance	≥ 95% (425 nm) ≥ 97% (500 nm)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.