Description

2,2'-Methylenebis[6-(2-Hydroxy-5-Methylbenzyl)-p-Cresol] is a high-purity phenolic antioxidant widely used to inhibit oxidative degradation in various polymer systems. Its molecular structure provides excellent thermal stability and low volatility, making it a critical additive for extending the service life and maintaining the properties of sensitive materials. This compound is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking reliable protection against thermal-oxidative aging.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (e.g., polyethylene, polypropylene), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Elastomer Protection: Used in styrene-butadiene rubber (SBR), nitrile rubber (NBR), and other elastomers to maintain elasticity and prevent cracking or hardening.
• Adhesive & Sealant Formulations: Enhances the shelf-life and performance stability of hot-melt adhesives, pressure-sensitive adhesives, and industrial sealants.
• Lubricant & Grease Additive: Functions as an antioxidant in synthetic lubricants, industrial oils, and greases to reduce sludge formation and viscosity increase.
• Fuel & Petrochemical Additive: Inhibits gum formation and oxidation in fuels, transformer oils, and other hydrocarbon-based fluids.
• Coating Resins: Protects alkyd resins and other coating binders from yellowing and embrittlement caused by oxidation.

Basic Information

Product Name	2,2'-Methylenebis[6-(2-Hydroxy-5-Methylbenzyl)-p-Cresol]
CAS No.	20837-68-7
Molecular Formula	C₃₁H₃₂O₄
Molecular Weight	468.58 g/mol
Synonyms	2,2'-Methylenebis(6-(2-hydroxy-5-methylbenzyl)-4-methylphenol); Antioxidant 2246; AO 2246; 2,2'-Methylenebis(4-methyl-6-(2-hydroxy-5-methylbenzyl)phenol); Bis(2-hydroxy-3-(2-hydroxy-5-methylbenzyl)-5-methylphenyl)methane; Phenolic Antioxidant 2246; Low Volatility Antioxidant 2246; 4,4'-Methylenebis(2,6-bis(2-hydroxy-5-methylbenzyl)phenol) (related isomer)
EINECS	244-098-1

Quality Control

Our production of 2,2'-Methylenebis[6-(2-Hydroxy-5-Methylbenzyl)-p-Cresol] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC and GC. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, melting point, and impurity profiles to support your quality assurance and regulatory compliance needs.

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). Due to its nature as an easily oxidized compound, prolonged exposure to air should be minimized. Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	125 - 135 °C
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1 %

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