Description

Diphenylethyne-3,3',5,5'-Tetracarboxylic Acid is a high-purity, multifunctional organic building block characterized by its rigid, symmetrical structure and four reactive carboxyl groups. This compound is essential for synthesizing advanced materials, including high-performance polymers, metal-organic frameworks (MOFs), and covalent organic frameworks (COFs), where precise molecular geometry and functionality are critical. It is primarily utilized by research institutions and industrial manufacturers in the fields of advanced material science, organic electronics, and specialty chemical synthesis.

Application

• Key monomer for the synthesis of polyimides and other high-temperature, high-performance polymers.
• Critical organic linker in the construction of Metal-Organic Frameworks (MOFs) and Covalent Organic Frameworks (COFs) for gas storage, separation, and catalysis.
• Building block for organic semiconductors and electronic materials due to its conjugated backbone.
• Precursor for specialty dyes and pigments requiring high thermal and chemical stability.
• Intermediate in pharmaceutical research for creating complex molecular architectures.
• Cross-linking agent for the development of advanced epoxy resins and coatings.

Basic Information

Product Name	Diphenylethyne-3,3',5,5'-Tetracarboxylic Acid
CAS No.	957014-38-9
Molecular Formula	C18H8O8
Molecular Weight	352.25 g/mol
Synonyms	1,1':3',1''-Terphenyl-3,3'',5,5''-tetracarboxylic Acid; 3,3'',5,5''-Biphenyltetracarboxylic Acid (derived from diphenylethyne); 4,4'-(1,2-Ethynediyl)bis[1,3-benzenedicarboxylic Acid]; TPE-TA; Diphenylacetylene Tetracarboxylic Acid; Biphenyl-3,3',5,5'-tetracarboxylic Acid (common misnomer); Ethynylenedibenzoic Acid Tetracarboxylate
EINECS	Contact for details

Quality Control

Our Diphenylethyne-3,3',5,5'-Tetracarboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and advanced material synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture. For long-term storage, consider using a desiccant.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%

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