Description

3,3',5,5'-Tetramethyl-4,4'-Dihydroxybiphenyl is a high-purity biphenyl derivative, also known as Tetramethylbiphenol, valued for its symmetrical, sterically hindered phenolic structure. This compound serves as a critical advanced intermediate and functional monomer in the synthesis of high-performance polymers and specialty chemicals. It is essential for manufacturers in the polymer, pharmaceutical, and agrochemical industries seeking to develop materials with enhanced thermal stability and specific functional properties.

Application

• Polymer Synthesis: Key monomer for producing high-performance engineering plastics, including polycarbonates, polyarylates, and epoxy resins, where it imparts improved thermal and oxidative stability.
• Pharmaceutical Intermediates: Serves as a crucial building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemicals: Used in the manufacture of advanced pesticides, herbicides, and plant growth regulators.
• Antioxidant Precursor: Acts as a starting material for synthesizing specialized phenolic antioxidants used in plastics, fuels, and lubricants.
• Liquid Crystal Materials: A potential intermediate in the production of monomers for liquid crystal polymers (LCPs) and display materials.
• Cross-linking Agent: Utilized in the formulation of specialty coatings, adhesives, and composite materials to enhance network density and performance.
• Research & Development: Employed in academic and industrial R&D for developing novel organic compounds and materials science applications.

Basic Information

Product Name	3,3',5,5'-Tetramethyl-4,4'-Dihydroxybiphenyl
CAS No.	26567-11-3
Molecular Formula	C16H18O2
Molecular Weight	242.31 g/mol
Synonyms	4,4'-Dihydroxy-3,3',5,5'-tetramethylbiphenyl; Tetramethylbiphenol; TMBP; 3,3',5,5'-Tetramethylbiphenyl-4,4'-diol; Biphenol TM; 4,4'-(3,3',5,5'-Tetramethylbiphenyl)diol; 4,4'-Biphenol, 3,3',5,5'-tetramethyl-
EINECS	Contact for details

Quality Control

Our 3,3',5,5'-Tetramethyl-4,4'-Dihydroxybiphenyl is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure it meets precise purity and identity specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance with your technical requirements.

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) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	245 - 255 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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