Description

Bis[2-(1,1-Dimethylethyl)-6-[[3-(1,1-Dimethylethyl)-2-Hydroxy-5-Methylphenyl]Methyl]-4-Methylphenyl] Terephthalate is a high-performance phenolic antioxidant and light stabilizer, specifically a hindered phenolic ester. This compound is valued for its exceptional ability to inhibit oxidative degradation and prevent color formation in polymers exposed to heat and light. It is primarily needed by manufacturers in the plastics, synthetic fiber, and specialty coatings industries seeking to enhance the durability and longevity of their products.

Application

• Polymer Stabilization: Acts as a primary antioxidant and processing stabilizer in polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during extrusion and molding.
• Light Stabilizer for Plastics: Provides protection against UV-induced degradation, helping to maintain the mechanical properties and color stability of outdoor plastic applications.
• Synergistic Formulations: Used in combination with secondary antioxidants (e.g., phosphites, thioesters) and HALS (Hindered Amine Light Stabilizers) for enhanced stabilization performance in demanding environments.
• Fiber and Film Production: Incorporated into synthetic fibers (e.g., polypropylene fibers) and thin films to ensure stability during high-temperature processing and end-use.
• Adhesives and Sealants: Enhances the shelf-life and performance stability of hot-melt adhesives and elastomeric sealants by preventing oxidative cross-linking and embrittlement.
• Lubricant and Fuel Additive: Serves as an antioxidant additive in industrial lubricants, greases, and fuels to reduce sludge formation and viscosity increase.

Basic Information

Product Name	Bis[2-(1,1-Dimethylethyl)-6-[[3-(1,1-Dimethylethyl)-2-Hydroxy-5-Methylphenyl]Methyl]-4-Methylphenyl] Terephthalate
CAS No.	57569-40-1
Molecular Formula	C48H62O6
Molecular Weight	735.00 g/mol
Synonyms	Bis(2,4-di-tert-butyl-6-((3-tert-butyl-2-hydroxy-5-methylbenzyl)methyl)phenyl) terephthalate; 1,4-Benzenedicarboxylic acid, bis[2-(1,1-dimethylethyl)-6-[[3-(1,1-dimethylethyl)-2-hydroxy-5-methylphenyl]methyl]-4-methylphenyl] ester; Phenolic antioxidant 57569-40-1; Terephthalic acid, bis[3,5-bis(1,1-dimethylethyl)-2-[[3-(1,1-dimethylethyl)-2-hydroxy-5-methylphenyl]methyl]phenyl] ester; Low-color phenolic antioxidant; High molecular weight phenolic ester stabilizer.
EINECS	Contact for details

Quality Control

Our production of Bis[2-(1,1-Dimethylethyl)-6-[[3-(1,1-Dimethylethyl)-2-Hydroxy-5-Methylphenyl]Methyl]-4-Methylphenyl] Terephthalate adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications. Comprehensive Certificates of Analysis (COA) documenting identity, assay, impurity profile, and physical properties are available upon request to support your quality assurance protocols.

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 direct light exposure.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	Contact for details
Loss on Drying	≤ 0.5 %
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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