Description

4,4'-Methylenebis(2,3,5-Trimethylphenol) is a sterically hindered bisphenol derivative, valued for its role as a high-performance antioxidant and polymerization inhibitor. Its molecular structure provides excellent stability, making it a critical intermediate in the synthesis of advanced materials and specialty chemicals. This compound is essential for manufacturers in the polymer, resin, and lubricant additive industries seeking to enhance product longevity and performance under demanding conditions.

Application

• Primary antioxidant and stabilizer in polymers and plastics, including polyolefins and engineering resins.
• Key intermediate for synthesizing advanced phenolic antioxidants and phosphite stabilizers.
• Stabilizing agent in lubricants, greases, and hydraulic fluids to prevent oxidative degradation.
• Inhibitor in monomer purification and storage processes to prevent premature polymerization.
• Component in the production of high-performance epoxy resins and other thermosetting polymers.
• Used in research and development of novel macromolecular materials and organic synthesis.

Basic Information

Product Name	4,4'-Methylenebis(2,3,5-Trimethylphenol)
CAS No.	29366-02-7
Molecular Formula	C21H28O2
Molecular Weight	312.45 g/mol
Synonyms	2,2'-Methylenebis(4,6,6-trimethylphenol); Bis(2-hydroxy-3,5,6-trimethylphenyl)methane; 4,4'-Methylenebis(2,3,5-trimethylphenol); Antioxidant 2246-S; AO-2246; 2,2'-Methylenebis(6-tert-butyl-4-methylphenol) analog; Low volatility bisphenol antioxidant; Hindered bisphenol stabilizer
EINECS	Contact for details

Quality Control

Our production of 4,4'-Methylenebis(2,3,5-Trimethylphenol) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry benchmarks. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its nature of being easily oxidized, it is recommended to store under an inert atmosphere such as nitrogen for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	155°C - 165°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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