Description

2,2'-Methylenebis[6-tert-Butylphenol] is a high-performance phenolic antioxidant widely recognized for its effectiveness in preventing oxidative degradation. This compound is critical for extending the service life and maintaining the physical properties of polymers and other materials exposed to heat and oxygen. It is an essential additive for manufacturers in the polymer, rubber, and lubricant industries seeking to enhance product stability and durability.

Application

The primary function of 2,2'-Methylenebis[6-tert-Butylphenol] is as a primary antioxidant and stabilizer. Its key applications include:

• Polymer Stabilization: Protecting polyolefins (PP, PE), polystyrene, and engineering plastics from thermal-oxidative degradation during processing and end-use.
• Rubber Industry: Serving as an antioxidant in synthetic rubbers like SBR, BR, and NBR to prevent cracking and maintain elasticity.
• Lubricant & Fuel Additive: Inhibiting oxidation in industrial lubricants, greases, and transformer oils to reduce sludge formation and viscosity increase.
• Adhesive & Sealant Formulations: Enhancing the shelf-life and performance stability of hot-melt and pressure-sensitive adhesives.
• Intermediate for Advanced Antioxidants: Acting as a key building block in the synthesis of more complex, high-molecular-weight hindered phenol antioxidants.

Basic Information

Product Name	2,2'-Methylenebis[6-tert-Butylphenol]
CAS No.	133-63-1
Molecular Formula	C23H32O2
Molecular Weight	340.50 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butylphenol); Antioxidant 2246; Bis(2-hydroxy-3-tert-butyl-5-methylphenyl)methane; 4,4'-Methylenebis(2-tert-butyl-6-methylphenol); MBMBP; AO-2246; Phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-; Lowinox 22M46
EINECS	205-117-0

Quality Control

Our production of 2,2'-Methylenebis[6-tert-Butylphenol] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, melting point, and color. A Certificate of Analysis (COA) detailing these results is provided with each shipment to guarantee traceability and compliance with your quality assurance requirements.

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.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
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.