Description

4,4'-Ethylenebis(2,6-Ditert-Butylphenol) is a high-performance sterically hindered phenolic antioxidant. This compound is valued for its exceptional ability to inhibit oxidative degradation and extend the service life of polymers and hydrocarbon-based materials. It is a critical additive for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance product stability and durability under demanding conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (polyethylene, polypropylene), polystyrene, and engineering plastics to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Industry: Protects synthetic rubbers (SBR, BR, NBR) and natural rubber against aging, maintaining elasticity and mechanical properties.
• Lubricants & Fuels: Antioxidant additive in engine oils, greases, industrial lubricants, and fuels to prevent sludge formation and viscosity increase.
• Adhesives & Sealants: Enhances the shelf-life and performance stability of adhesive formulations and sealants.
• Elastomers & Thermoplastic Elastomers (TPE): Provides long-term protection against oxidative cross-linking and chain scission.
• Wire & Cable Insulation: Used in polyethylene and cross-linked polyethylene (XLPE) compounds to protect insulation materials from thermal aging.

Basic Information

Product Name	4,4'-Ethylenebis(2,6-Ditert-Butylphenol)
CAS No.	1516-94-5
Molecular Formula	C30H46O2
Molecular Weight	438.70 g/mol
Synonyms	Ethylenebis(2,6-di-tert-butylphenol); 2,2'-Ethylidenebis(4,6-di-tert-butylphenol); Antioxidant 702; Ethanediylidenebis(4,6-di-tert-butyl-1,3-phenylene); Bis(2,6-di-tert-butyl-4-hydroxyphenyl)ethane; AO 702; EDBP; Phenol, 4,4'-ethylidenebis[2,6-bis(1,1-dimethylethyl)-]
EINECS	216-170-1

Quality Control

Our production of 4,4'-Ethylenebis(2,6-Ditert-Butylphenol) follows stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is tested against comprehensive specifications, including identity, assay, and impurity profiles. Certificates of Analysis (COA) documenting all test results are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	160 - 165 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %

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