Description

2,2'-Methylenebis[4,6-Bis(1-Methyl-1-Phenylethyl)Phenol] is a high-performance, sterically hindered phenolic antioxidant. This compound matters for its exceptional ability to inhibit oxidative degradation and extend the service life of polymers and other sensitive materials. It is primarily needed by manufacturers in the polymer, rubber, and specialty chemical industries seeking to enhance the thermal and color stability of their products under demanding conditions.

Application

• Polymer Stabilization: A highly effective primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Rubber Industry: Used in the production of tires, hoses, seals, and other rubber goods to protect against heat aging and maintain elasticity and mechanical properties.
• Adhesives and Sealants: Imparts long-term stability to hot-melt adhesives, polyurethane systems, and other adhesive formulations exposed to heat and oxygen.
• Lubricant and Fuel Additive: Serves as an antioxidant additive in lubricating oils, greases, and fuels to prevent sludge formation and viscosity increase.
• Coating Resins: Protects alkyd, acrylic, and other coating resins from yellowing and embrittlement caused by oxidation, especially in high-temperature cure applications.
• Elastomer Production: Critical for stabilizing synthetic elastomers like SBR, BR, and NBR during their manufacture and compounding.
• Wire and Cable Insulation: Enhances the longevity of polyethylene and cross-linked polyethylene insulation used in electrical cables.
• Masterbatch and Concentrates: A key component in antioxidant masterbatches for easy and uniform dispersion into various polymer matrices.

Basic Information

Product Name	2,2'-Methylenebis[4,6-Bis(1-Methyl-1-Phenylethyl)Phenol]
CAS No.	71113-23-0
Molecular Formula	C₅₅H₆₄O₂
Molecular Weight	757.1 g/mol
Synonyms	2,2'-Methylenebis(4,6-di-tert-butylphenol); Bis(3,5-di-tert-butyl-4-hydroxyphenyl)methane; Antioxidant 2246-S; AO 2246-S; 4,4'-Methylenebis(2,6-di-tert-butylphenol); Ethanox 330 (Trade Name); Irganox 1330 (Trade Name); Lowinox 22M46
EINECS	Contact for details

Quality Control

Our production of 2,2'-Methylenebis[4,6-Bis(1-Methyl-1-Phenylethyl)Phenol] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure compliance with industry specifications. Certificates of Analysis (COA) detailing all relevant parameters are provided to guarantee supply consistency and traceability for our global B2B clients.

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 structure
Assay (HPLC)	≥ 98.0 %
Melting Point	240 - 245 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %
Transmittance (425 nm)	≥ 95.0 %
Transmittance (500 nm)	≥ 97.0 %

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