Description

2,2'-Methylenebis[4-tert-Butyl-6-Cyclopentylphenol] is a high-performance, sterically hindered phenolic antioxidant widely used to inhibit oxidative degradation in various polymeric systems. Its molecular structure provides excellent long-term thermal stability and low volatility, making it a critical additive for extending the service life of sensitive materials. This compound is essential for manufacturers in the plastics, rubber, and synthetic fiber industries who require reliable protection against heat- and oxygen-induced aging. Consistent quality and supply chain reliability are paramount for these demanding industrial applications.

Application

This antioxidant is utilized across multiple industries to prevent oxidative chain scission and maintain material integrity. Key application areas include:

• Polyolefin Stabilization: Primary antioxidant for polypropylene (PP) and polyethylene (PE) resins, films, and fibers.
• Rubber Industry: Protects synthetic rubbers like SBR, BR, and NBR from thermo-oxidative degradation during processing and service.
• Adhesives and Sealants: Enhances the shelf-life and durability of hot-melt and pressure-sensitive adhesive formulations.
• Engineering Plastics: Used in styrenics (PS, ABS, HIPS) and other engineering polymers to prevent yellowing and embrittlement.
• Lubricant and Fuel Additive: Acts as an antioxidant in industrial lubricants, greases, and fuels to inhibit sludge formation.
• Elastomers and Thermoplastic Elastomers (TPE): Provides stabilization for products requiring flexibility and resistance to heat aging.

Basic Information

Product Name	2,2'-Methylenebis[4-tert-Butyl-6-Cyclopentylphenol]
CAS No.	93840-42-7
Molecular Formula	C33H48O2
Molecular Weight	476.74 g/mol
Synonyms	Antioxidant 702; Phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-4-cyclopentyl-; Bis(4-tert-butyl-6-cyclopentyl-2-hydroxyphenyl)methane; 2,2'-Methylenebis(4-tert-butyl-6-cyclopentylphenol); 4,4'-Methylenebis(2-cyclopentyl-6-tert-butylphenol); Lowinox® 22M46; Antioxidant 22M46; AO-6
EINECS	Contact for details

Quality Control

Our production of 2,2'-Methylenebis[4-tert-Butyl-6-Cyclopentylphenol] adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. The product is manufactured and tested in facilities operating under ISO 9001 quality standards. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and key physical parameters, available upon request. We support compliance with global regulatory frameworks including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized (store under inert atmosphere) and light-sensitive (store away from light). Keep away from strong oxidizing agents, heat, and sources of ignition. For long-term storage, consider packaging under an inert gas such as nitrogen.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	115 - 125 °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.