Description

2,2'-Ethylidenebis(4,6-Di-tert-Butylphenol) is a high-performance sterically hindered phenolic antioxidant. This compound is critical for preventing oxidative degradation and extending the service life of polymers and hydrocarbon-based materials. It is an essential additive for manufacturers in the plastics, rubber, and lubricant industries who require reliable stabilization against thermal and oxidative stress.

Application

• Primary antioxidant in polyolefins (e.g., PP, PE) to prevent thermal oxidation during processing and end-use.
• Stabilizer for elastomers and synthetic rubbers to maintain elasticity and prevent cracking.
• Additive in industrial lubricants, greases, and transformer oils to inhibit sludge formation and viscosity increase.
• Stabilizing component in adhesives, sealants, and hydrocarbon-based coatings.
• Used in the production of fuel and gasoline to improve oxidation stability.
• Intermediate in the synthesis of other specialty antioxidants and polymer additives.

Basic Information

Product Name	2,2'-Ethylidenebis(4,6-Di-tert-Butylphenol)
CAS No.	35958-30-6
Molecular Formula	C30H46O2
Molecular Weight	438.70 g/mol
Synonyms	Ethylidenebis(4,6-di-tert-butylphenol); 2,2'-Ethylidenebis(4,6-di-tert-butylphenol); Antioxidant 736; Ethan-1,1-diylbis(4,6-di-tert-butylbenzene-1,3-diol); Bis(4,6-di-tert-butyl-2-hydroxyphenyl)methane; Phenol, 2,2'-ethylidenebis[4,6-bis(1,1-dimethylethyl)-]; Lowinox 22M46
EINECS	252-816-3

Quality Control

Our production of 2,2'-Ethylidenebis(4,6-Di-tert-Butylphenol) adheres to stringent quality management protocols. Every batch is tested to ensure high purity and consistent performance as a polymer stabilizer. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with each shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen blanket). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
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.