Description

2-(2'-Methacryloxy-5'-Methylphenyl)Benzotriazole is a specialized reactive benzotriazole derivative that functions as a polymerizable ultraviolet (UV) light absorber. This compound is engineered to be covalently incorporated into polymer chains, providing permanent, non-migrating UV stabilization for high-performance materials. It is essential for manufacturers requiring long-term weatherability and color stability in demanding applications, particularly within the advanced polymer, coatings, and specialty resin industries.

Application

• Reactive UV Stabilizer for Acrylic Polymers: Chemically bonds into acrylic and methacrylic polymer backbones during polymerization for permanent light protection in optical lenses, automotive coatings, and clear topcoats.
• High-Performance Coatings and Paints: Provides enduring UV resistance in automotive OEM and refinish paints, industrial maintenance coatings, and aerospace finishes where migration and extraction are concerns.
• Photostabilization of Engineering Plastics: Used in the synthesis of weatherable engineering plastics such as polycarbonate blends, PMMA, and other specialty polymers for outdoor applications.
• Adhesives and Sealants: Enhances the long-term durability and prevents embrittlement of UV-cured and structural adhesives used in construction and automotive assembly.
• Advanced Composite Materials: Incorporated into fiber-reinforced polymer (FRP) matrices for wind turbine blades, marine components, and construction panels to prevent UV-induced degradation.
• Specialty Resins for Electronics: Used in encapsulants, conformal coatings, and photoresists where permanent UV filtering is required without compromising electrical properties.

Basic Information

Product Name	2-(2'-Methacryloxy-5'-Methylphenyl)Benzotriazole
CAS No.	188680-81-1
Molecular Formula	C18H17N3O2
Molecular Weight	307.35 g/mol
Synonyms	2-(2H-Benzotriazol-2-yl)-4-methyl-6-(2-methyl-1-oxo-2-propen-1-yl)phenol; 2-(2'-Hydroxy-5'-methacryloxyethylphenyl)-2H-benzotriazole (common name variant); Benzotriazole UV monomer; Reactive benzotriazole UV absorber; Polymerizable UV stabilizer; 2-[2-Hydroxy-5-(2-methacryloyloxyethyl)phenyl]-2H-benzotriazole; Norbloc 7966 (trade name example); Light absorber monomer
EINECS	Contact for details

Quality Control

Our production of 2-(2'-Methacryloxy-5'-Methylphenyl)Benzotriazole adheres to stringent quality protocols to ensure batch-to-batch consistency and high reactivity. Quality is verified through comprehensive analytical testing, including assay, purity profiling, and functional group analysis. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming specifications for identity, potency, and critical impurities. Our quality system supports compliance with relevant global standards for industrial chemical manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C (59-77°F). This material is light-sensitive (store away from light) and easily oxidized (store under inert atmosphere). For long-term storage, consider packaging under an inert gas such as nitrogen or argon. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Methacryloyl Group Content	Conforms

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