Description

3,3′,5,5′-Tetramethyl-4,4′-Diphenoquinone (Tmdq) is a high-purity, specialized quinone derivative with the CAS number 142763-32-4, valued for its role as a key intermediate and functional additive in advanced material synthesis. Its unique tetramethyl-substituted diphenoquinone structure makes it a critical component for modifying polymer properties and facilitating specific oxidation-reduction reactions. This compound is essential for R&D and production teams in the polymer, specialty chemical, and pharmaceutical industries seeking to develop materials with enhanced thermal stability, electrical conductivity, or specific redox characteristics.

Application

• Polymer Chemistry: Acts as a crucial intermediate or co-monomer in the synthesis of high-performance engineering plastics and specialty polymers.
• Antioxidant & Stabilizer Precursor: Serves as a building block for developing novel antioxidant agents and stabilizers for plastics and elastomers.
• Electroactive Materials: Used in the research and development of organic semiconductors, conductive polymers, and battery materials due to its redox-active quinone moiety.
• Pharmaceutical Intermediates: Functions as a sophisticated synthetic building block for active pharmaceutical ingredients (APIs) and fine chemicals.
• Dye & Pigment Synthesis: Employed as a key intermediate in the production of advanced organic dyes and pigments.
• Cross-linking Agent: Utilized in formulations requiring specific cross-linking functionalities to enhance material durability.
• Academic & Industrial R&D: A valuable reagent for research in organic synthesis, material science, and catalysis.

Basic Information

Product Name	3,3′,5,5′-Tetramethyl-4,4′-Diphenoquinone (Tmdq)
CAS No.	142763-32-4
Molecular Formula	C16H14O2
Molecular Weight	238.28 g/mol
Synonyms	3,3',5,5'-Tetramethyl-4,4'-diphenoquinone; TMDQ; Tetramethyldiphenoquinone; 4,4'-Bi(2,6-dimethylphenol)quinone; 2,2',6,6'-Tetramethyl-4,4'-biphenoquinone; 4,4'-Diphenoquinone, 3,3',5,5'-tetramethyl-; TMDPQ; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our 3,3′,5,5′-Tetramethyl-4,4′-Diphenoquinone (Tmdq) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment ensures the material meets the stringent requirements for research and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its light-sensitive nature and propensity to be easily oxidized, it is recommended to handle under an inert atmosphere for long-term storage and to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
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.