Description

2-(3-(tert-Butyl)-4-Hydroxy-5-(5-Methoxy-2H-Benzo-[D][1,2,3]Triazol-2-Yl)Phenoxy)Ethyl Methacrylate is a high-performance, polymerizable ultraviolet (UV) light absorber and stabilizer, critical for enhancing the durability and longevity of polymeric materials. Its unique molecular structure, featuring both a hindered phenol antioxidant moiety and a benzotriazole UV absorber linked via a methacrylate group, allows it to be chemically incorporated into polymer chains, providing permanent, non-leaching protection. This compound is essential for formulators and manufacturers in the plastics, coatings, and advanced materials industries seeking to produce products with superior resistance to photodegradation, yellowing, and mechanical property loss.

Application

• Reactive UV Stabilizer for Acrylic Polymers: Chemically bonds into PMMA, polycarbonate blends, and other acrylic-based resins during polymerization for permanent light stabilization.
• Coatings and Paints: Imparts exceptional weatherability and gloss retention to automotive clear coats, industrial coatings, and wood finishes by copolymerizing into the coating matrix.
• Advanced Adhesives and Sealants: Enhances the long-term performance and color stability of UV-curable and structural adhesive formulations exposed to sunlight.
• Engineering Plastics: Used as a co-monomer in the synthesis of specialty engineering plastics where migration resistance of additives is paramount.
• Optical Materials: Protects optical lenses, films, and displays from UV-induced degradation without causing haze or color issues.
• Packaging Materials: Incorporated into polymers for packaging that requires protection of sensitive contents from UV light while ensuring regulatory compliance for non-migration.

Basic Information

Product Name	2-(3-(tert-Butyl)-4-Hydroxy-5-(5-Methoxy-2H-Benzo-[D][1,2,3]Triazol-2-Yl)Phenoxy)Ethyl Methacrylate
CAS No.	114166-73-3
Molecular Formula	C25H31N3O5
Molecular Weight	453.53 g/mol
Synonyms	2-[3-tert-Butyl-4-hydroxy-5-(5-methoxy-2H-benzotriazol-2-yl)phenoxy]ethyl methacrylate; 2-(2H-Benzotriazol-2-yl)-4-(1,1-dimethylethyl)-6-[2-(2-methyl-1-oxo-2-propen-1-yl)oxy]ethyl]phenol; Reactive Benzotriazole UV Absorber; Polymerizable UV Stabilizer; 2-(2H-Benzotriazol-2-yl)-4-tert-butyl-6-(2-methacryloyloxyethyl)phenol; Norbloc® 7966 (potential trade name analog); 5-Methoxy-2-(2-hydroxy-3-tert-butyl-5-methacryloyloxyethylphenyl)-2H-benzotriazole
EINECS	Contact for details

Quality Control

Every batch of our 2-(3-(tert-Butyl)-4-Hydroxy-5-(5-Methoxy-2H-Benzo-[D][1,2,3]Triazol-2-Yl)Phenoxy)Ethyl Methacrylate is manufactured and tested under a strict quality management system. We ensure high purity and consistent performance through advanced analytical techniques including HPLC, GC, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee it meets your specific formulation requirements and supports your own quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This product is easily oxidized; for long-term storage, consider keeping under an inert atmosphere such as nitrogen. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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