Description

1,1,2,2-Tetramethyl-1,2-Bis(4'-Hydroxyphenyl)Ethane is a high-purity, symmetrical bisphenol derivative, also known as Tetramethyl Bisphenol A (TMBPA). This compound serves as a critical advanced monomer and intermediate in the synthesis of high-performance polymers and specialty chemicals. It is essential for manufacturers in the engineering plastics, epoxy resins, and specialty coatings sectors who require materials with enhanced thermal stability and chemical resistance.

Application

• High-Performance Polymer Synthesis: A key monomer for producing polycarbonates, polyesters, and polyarylates with superior heat resistance and mechanical properties.
• Advanced Epoxy Resin Systems: Used as a co-monomer to formulate epoxy resins for demanding applications in electronics encapsulation and aerospace composites.
• Specialty Additive Manufacturing: Serves as a building block for resins used in high-temperature 3D printing and photopolymer formulations.
• Pharmaceutical & Agro-chemical Intermediates: Acts as a precursor in the synthesis of complex molecules for active ingredients and crop protection agents.
• Liquid Crystal Polymers (LCPs): An important intermediate for manufacturing LCPs used in precision electronic components and connectors.
• Antioxidant & Stabilizer Precursor: Utilized in the production of phenolic antioxidants for plastics and rubber to prevent thermal degradation.

Basic Information

Product Name	1,1,2,2-Tetramethyl-1,2-Bis(4'-Hydroxyphenyl)Ethane
CAS No.	74385-27-6
Molecular Formula	C20H26O2
Molecular Weight	298.42 g/mol
Synonyms	Tetramethyl Bisphenol A (TMBPA); 4,4'-(2,3-Dimethyl-2,3-butanediyl)diphenol; 1,1,2,2-Tetramethyl-1,2-bis(4-hydroxyphenyl)ethane; 2,2,3,3-Tetramethyl-1,4-bis(4-hydroxyphenyl)butane; TM-BPA; NSC 403820; Bisphenol TM; α,α,α',α'-Tetramethyl-1,4-phenylenedi-2-propanol
EINECS	Contact for details

Quality Control

Our 1,1,2,2-Tetramethyl-1,2-Bis(4'-Hydroxyphenyl)Ethane is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency suitable for sensitive synthesis applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is easily oxidized and should be stored under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation to maintain optimal quality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	168 - 172 °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.