Description

2,2',3,3',5,5',6-Heptamethyl(4,4'-Methylenediphenol) is a high-purity, multi-methylated bisphenol derivative, serving as a critical advanced intermediate in specialty polymer synthesis. Its unique sterically hindered phenolic structure provides enhanced thermal stability and oxidative resistance, making it a valuable building block for high-performance materials. This compound is essential for R&D and production in sectors requiring tailored polymer properties, such as advanced resins, specialty coatings, and high-temperature stabilizers.

Application

• Polymer Intermediate: Key monomer for synthesizing novel polycarbonates, polyesters, and epoxy resins with improved thermal and mechanical properties.
• Antioxidant & Stabilizer Precursor: Used in the manufacture of high-performance phenolic antioxidants for plastics, rubber, and lubricants to prevent thermal and oxidative degradation.
• Specialty Coatings & Adhesives: Imparts enhanced durability, chemical resistance, and weatherability to industrial and protective coatings as well as high-strength adhesives.
• Pharmaceutical & Agrochemical Intermediates: Serves as a sophisticated building block in the synthesis of active pharmaceutical ingredients (APIs) and advanced agrochemicals.
• Electronic Materials: Utilized in the development of specialty polymers for electronic encapsulants, printed circuit board substrates, and other high-purity applications.
• Research & Development: A valuable compound for academic and industrial research focused on novel material science and organic synthesis pathways.

Basic Information

Product Name	2,2',3,3',5,5',6-Heptamethyl(4,4'-Methylenediphenol)
CAS No.	29366-03-8
Molecular Formula	C23H32O2
Molecular Weight	340.50 g/mol
Synonyms	4,4'-Methylenebis(2,3,5,6-tetramethylphenol); Heptamethyl Bisphenol; 2,2',3,3',5,5',6-Heptamethyl-4,4'-methylenediphenol; Bisphenol TM; 4,4'-(Methylenedi-2,3,5,6-tetramethylphenol); TM-Bisphenol; NSC 403796; Heptamethyl BPA Derivative
EINECS	Contact for details

Quality Control

Our 2,2',3,3',5,5',6-Heptamethyl(4,4'-Methylenediphenol) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with each shipment to support your quality assurance and regulatory compliance needs.

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 sensitivity to light and tendency for oxidation, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. 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	165 - 175 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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