Description

4,4'-Diethynyldiphenylmethane is a high-purity, specialized organic intermediate featuring two terminal alkyne groups on a diphenylmethane scaffold. This unique molecular structure makes it a valuable building block for advanced materials synthesis, particularly in the creation of rigid, cross-linked polymers and thermally stable resins. It is essential for R&D and production in industries focused on high-performance polymers, specialty coatings, and electronic materials.

Application

• Advanced Polymer Synthesis: A key monomer for the production of acetylene-terminated resins (ATRs) and poly(arylene ethynylene)s (PAEs), which are used in high-temperature composites and adhesives.
• Thermoset Resins: Serves as a cross-linking agent in the formulation of thermoset polymers with excellent thermal stability and mechanical properties for aerospace and automotive applications.
• Pharmaceutical Intermediates: Used in the research and synthesis of complex organic molecules and active pharmaceutical ingredients (APIs) requiring a rigid, conjugated backbone.
• Material Science Research: Employed in developing novel organic frameworks, dendrimers, and molecular wires for electronic and optoelectronic devices.
• Specialty Coatings: Incorporated into formulations for coatings that require enhanced chemical resistance, durability, and thermal performance.

Basic Information

Product Name	4,4'-Diethynyldiphenylmethane
CAS No.	6140-83-6
Molecular Formula	C₁₇H₁₂
Molecular Weight	216.28 g/mol
Synonyms	Bis(4-ethynylphenyl)methane; 1,1'-(Methylenedi-4,1-phenylene)bis(ethyne); 4,4'-(Methylenebis(1,4-phenylene))diacetylene; Diethynyldiphenylmethane; ATDE Monomer; Acetylene-Terminated Diphenylmethane Derivative
EINECS	Contact for details

Quality Control

Our 4,4'-Diethynyldiphenylmethane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for advanced material synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee supply reliability and product traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature and reactive alkyne groups, prolonged exposure to light or air should be minimized to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Residue on Ignition	< 0.1%

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