Description

4-tert-Butyl-2-(5-tert-Butyl-2-Oxo-2,3-Dihydro-1-Benzofuran-3-Yl)Phenyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate is a high-performance, sterically hindered phenolic compound designed for advanced material science applications. Its complex molecular architecture provides exceptional stability and functionality, making it a critical component in formulations requiring robust antioxidant and UV-stabilizing properties. This specialty chemical is essential for R&D and production teams in the polymer, coatings, and specialty additive industries seeking to enhance product longevity and performance under demanding conditions.

Application

• Polymer Stabilizer: Acts as a highly effective primary antioxidant and light stabilizer in engineering plastics, polyolefins, and synthetic rubbers to prevent thermal and oxidative degradation.
• Advanced Coatings & Resins: Incorporated into high-performance industrial, automotive, and aerospace coatings to improve weatherability, gloss retention, and prevent yellowing.
• Specialty Additive Precursor: Serves as a key synthetic intermediate or functional additive in the production of custom stabilizers and performance chemicals.
• Lubricant & Fuel Additive: Used to enhance the oxidative stability of synthetic lubricants, greases, and industrial fluids, extending their operational life.
• Adhesive & Sealant Formulations: Improves the long-term durability and resistance to environmental stress cracking in high-performance adhesives and sealants.
• Material Science R&D: Employed in academic and industrial research for developing new polymeric materials with tailored stability profiles.

Basic Information

Product Name	4-tert-Butyl-2-(5-tert-Butyl-2-Oxo-2,3-Dihydro-1-Benzofuran-3-Yl)Phenyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate
CAS No.	1261240-30-5
Molecular Formula	C39H50O5
Molecular Weight	598.82 g/mol
Synonyms	3,5-Di-tert-butyl-4-hydroxybenzoic acid 4-tert-butyl-2-(5-tert-butyl-2-oxo-2,3-dihydro-1-benzofuran-3-yl)phenyl ester; Benzoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 4-(1,1-dimethylethyl)-2-[5-(1,1-dimethylethyl)-2-oxo-2,3-dihydro-1-benzofuran-3-yl]phenyl ester; Hindered Phenolic Benzoate Ester; Antioxidant 1261240-30-5; Light Stabilizer CAS 1261240-30-5; Polymer Additive 1261240-30-5
EINECS	Contact for details

Quality Control

Our production of 4-tert-Butyl-2-(5-tert-Butyl-2-Oxo-2,3-Dihydro-1-Benzofuran-3-Yl)Phenyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and compliance with customer specifications. Comprehensive Certificates of Analysis (COA) documenting all critical parameters are provided to guarantee traceability and supply chain reliability for our global B2B partners.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This compound is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere such as nitrogen or argon to preserve efficacy. Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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