Description

4,4''-[Phenylenebis(1-Methylethylidene)]Bis(2-Methylphenol] is a high-purity phenolic compound, also known as a hindered phenol, valued for its role as an effective antioxidant and stabilizer. This compound is critical for protecting polymers, resins, and other industrial materials from oxidative degradation, thereby extending their service life and maintaining performance integrity. It is primarily needed by manufacturers in the polymer, rubber, and specialty chemical industries seeking reliable additive solutions.

Application

• Polymer Stabilizer: Acts as a primary antioxidant in polyolefins (e.g., PP, PE), engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Additive: Used in the production of tires, seals, and other rubber goods to inhibit aging and preserve elasticity and mechanical properties.
• Adhesive & Sealant Formulation: Enhances the shelf-life and thermal stability of hot-melt adhesives, epoxy resins, and polyurethane systems.
• Lubricant & Fuel Additive: Serves as an antioxidant additive in industrial lubricants, greases, and fuels to prevent sludge formation and viscosity increase.
• Coating Industry: Incorporated into paints, varnishes, and protective coatings to protect against yellowing and degradation caused by heat and light exposure.
• Intermediate for Specialty Chemicals: Used as a key building block in the synthesis of more complex antioxidants, UV stabilizers, and other performance chemicals.

Basic Information

Product Name	4,4''-[Phenylenebis(1-Methylethylidene)]Bis(2-Methylphenol]
CAS No.	28139-72-2
Molecular Formula	C29H36O2
Molecular Weight	416.60 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol); 2,2'-Methylenebis(6-(1,1-dimethylethyl)-4-methylphenol); Antioxidant 2246; AO 2246; MBMBP; 4,4'-Methylenebis(2-tert-butyl-6-methylphenol); Bis(2-hydroxy-3-tert-butyl-5-methylphenyl)methane; Phenol, 4,4'-methylenebis[2-(1,1-dimethylethyl)-6-methyl-]
EINECS	248-872-9

Quality Control

Our production of 4,4''-[Phenylenebis(1-Methylethylidene)]Bis(2-Methylphenol] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including assay, melting point determination, and impurity profiling. Certificates of Analysis (COA) documenting full specifications are available upon request, supporting compliance with relevant industry standards.

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). Keep away from strong oxidizing agents and heat sources. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Melting Point	124 - 128 °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.