Description

2,2'-Methylenebis[3,6-Dicyclopentyl-p-Cresol] is a high-performance, sterically hindered phenolic antioxidant widely used to inhibit oxidative degradation in various polymer systems. Its primary value lies in providing exceptional long-term thermal stability and color retention, even under demanding processing and service conditions. This compound is essential for manufacturers in the plastics, rubber, and specialty lubricant industries seeking to enhance the durability and lifespan of their products.

Application

• Primary antioxidant for polyolefins (PP, HDPE, LDPE) to prevent thermal oxidation during processing and end-use.
• Stabilizer for engineering plastics and styrenic polymers to maintain mechanical properties and color.
• Additive in synthetic rubbers and elastomers to protect against heat aging and flex cracking.
• Key component in hot-melt adhesives and sealants to improve oxidative stability.
• Stabilizing agent for industrial lubricants and greases, particularly in high-temperature applications.
• Used in food-contact polymer applications where regulatory compliance for antioxidants is required.
• Protective additive for polyurethane systems and other specialty polymers.

Basic Information

Product Name	2,2'-Methylenebis[3,6-Dicyclopentyl-p-Cresol]
CAS No.	55036-38-9
Molecular Formula	C₄₃H₆₀O₂
Molecular Weight	621.0 g/mol
Synonyms	2,2'-Methylenebis(6-cyclopentyl-4-methylphenol); Antioxidant 2246-S; Bis(2-hydroxy-3-cyclopentyl-5-methylphenyl)methane; 4,4'-Methylenebis(2-cyclopentyl-6-methylphenol); Phenol, 2,2'-methylenebis[6-cyclopentyl-4-methyl-; Lowinox® 22M46; Antioxidant MDPC; AO-2246S
EINECS	259-423-8

Quality Control

Our production of 2,2'-Methylenebis[3,6-Dicyclopentyl-p-Cresol] adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed against stringent in-house specifications, which typically include identity confirmation, assay/purity by HPLC, and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory 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). This material is easily oxidized and should be kept under an inert atmosphere (e.g., nitrogen) after opening the original container to maintain efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	118 - 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.