Description

2,2'-Methylenebis[6-tert-Butyl-3,4-Xylenol] is a high-performance phenolic antioxidant widely recognized for its effectiveness in stabilizing polymers and organic materials against oxidative degradation. Its primary value lies in its ability to extend the service life and maintain the physical properties of sensitive materials exposed to heat, light, and oxygen during processing and end-use. This compound is essential for formulators and manufacturers in the plastics, rubber, and lubricant industries seeking reliable protection for their products.

Application

• Polymer Stabilization: A key antioxidant for polyolefins (PP, PE), polystyrene, and engineering plastics to prevent thermal and oxidative degradation during extrusion and molding.
• Rubber Industry: Used in the production of synthetic rubbers (SBR, BR) and latex to inhibit aging and preserve elasticity.
• Lubricants & Fuels: Acts as an antioxidant additive in industrial lubricants, greases, and fuels to prevent sludge formation and viscosity increase.
• Adhesives & Sealants: Protects adhesive formulations from oxidative cross-linking, maintaining tack and shelf life.
• Coating Resins: Incorporated into alkyd and other coating resins to prevent skinning and gelation during storage.
• Elastomers & Fibers: Provides long-term stability to synthetic fibers and elastomeric components.

Basic Information

Product Name	2,2'-Methylenebis[6-tert-Butyl-3,4-Xylenol]
CAS No.	34560-22-0
Molecular Formula	C25H36O2
Molecular Weight	368.56 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol); Antioxidant 2246; AO 2246; MBMBP; 2,2'-Methylenebis(4-methyl-6-tert-butylphenol); Bis(2-hydroxy-3-tert-butyl-5-methylphenyl)methane; 4,4'-Methylenebis(2-tert-butyl-6-methylphenol); Lowinox® 22M46; Ethanox® 2246; Santowhite® MBPC
EINECS	252-097-3

Quality Control

Our production of 2,2'-Methylenebis[6-tert-Butyl-3,4-Xylenol] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is manufactured and tested in compliance with relevant industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and specific impurity profiles is provided with each shipment to support your quality assurance processes.

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 product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	125 - 130 °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.