Description

3-(2H-Benzotriazol-2-Yl)-5-(1,1-Dimethylethyl)-4-Hydroxybenzenepropanoic Acid Methyl Ester is a high-performance benzotriazole derivative widely recognized for its exceptional light-stabilizing properties. This compound is critical for protecting polymers and coatings from UV-induced degradation, thereby extending product lifespan and maintaining aesthetic quality. It is an essential additive for formulators and manufacturers in the plastics, paints, and advanced materials industries seeking reliable photostabilization solutions.

Application

• Polymer Stabilizer: Primary use as a highly effective UV absorber and light stabilizer in polyolefins (PP, PE), PVC, polycarbonates, and engineering plastics.
• Coatings & Paints: Protects automotive coatings, industrial paints, wood finishes, and architectural coatings from color fading, gloss loss, and chalking.
• Adhesives & Sealants: Enhances the weatherability and long-term performance of adhesive films and sealant formulations exposed to sunlight.
• Automotive Components: Used in interior and exterior plastic parts, dashboards, bumpers, and trim to prevent UV-induced brittleness and cracking.
• Agricultural Films: Incorporated into greenhouse films and mulch films to stabilize the polymer matrix against solar radiation, extending functional life.
• Advanced Material Protection: Applied in synthetic fibers, photographic materials, and specialty coatings where UV protection is paramount.

Basic Information

Product Name	3-(2H-Benzotriazol-2-Yl)-5-(1,1-Dimethylethyl)-4-Hydroxybenzenepropanoic Acid Methyl Ester
CAS No.	102577-46-8
Molecular Formula	C20H23N3O3
Molecular Weight	353.42 g/mol
Synonyms	Methyl 3-(2H-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyhydrocinnamate; UV-326; Tinuvin 326; Bumetrizole; 2-(2'-Hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole (related variant); 2-(3'-tert-Butyl-2'-hydroxy-5'-methylphenyl)-5-chlorobenzotriazole; Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, methyl ester; Light stabilizer 326
EINECS	Contact for details

Quality Control

Our production of 3-(2H-Benzotriazol-2-Yl)-5-(1,1-Dimethylethyl)-4-Hydroxybenzenepropanoic Acid Methyl Ester adheres to stringent quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for assay and purity, to ensure consistency and compliance with industry specifications. Certificates of Analysis (COA) documenting identity, purity, and related substances are provided to guarantee traceability and meet the rigorous demands of global supply chains.

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). This material is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere). Keep away from heat and incompatible materials. For long-term storage, consider an inert gas blanket (e.g., nitrogen or argon) to minimize oxidation risk.

Specification

Item	Specification
Appearance	Light yellow to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 99.0%
Melting Point	138°C - 142°C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 1.0%
Heavy Metals	≤ 10 ppm

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