Description

5,5′-Phenylenebis(Methylene)-1,1′-3,3′-(Benzene-Tetracarboxylic Acid) is a high-purity, multifunctional aromatic carboxylic acid derivative, serving as a critical building block for advanced materials. Its value lies in its unique tetracarboxylic acid structure, which enables the synthesis of complex polymers and coordination networks with tailored properties. This compound is essential for researchers and manufacturers in the fields of metal-organic frameworks (MOFs), polyimides, and specialty polymer resins, where precise molecular architecture dictates performance.

Application

• Metal-Organic Framework (MOF) Synthesis: Acts as a versatile organic linker for constructing porous coordination polymers with high surface area for gas storage, separation, and catalysis.
• High-Performance Polyimide Production: Serves as a key monomer for creating thermally stable, mechanically robust polyimide films and coatings used in electronics and aerospace.
• Specialty Polymer Cross-linking Agent: Utilized to enhance the thermal and chemical resistance of epoxy, polyester, and other resin systems.
• Chelating Agent Precursor: Used in the development of advanced ligands for metal ion sequestration and catalysis.
• Pharmaceutical Intermediate: Employed in the research and synthesis of complex organic molecules for medicinal chemistry applications.
• Advanced Material Research: A fundamental component in academic and industrial R&D for novel functional materials, including sensors and organic electronics.

Basic Information

Product Name	5,5′-Phenylenebis(Methylene)-1,1′-3,3′-(Benzene-Tetracarboxylic Acid)
CAS No.	22937-70-8
Molecular Formula	C24H16O8
Molecular Weight	432.38 g/mol
Synonyms	1,1',3,3'-Benzenetetracarboxylic acid, 5,5'-phenylenebis(methylene) ester; 5,5'-(Phenylenebis(methylene))bis(1,3-benzenedicarboxylic acid); Tetrakis(3-carboxyphenyl)-p-xylene; PXDC; 5,5'-(1,4-Phenylenebis(methylene))diisophthalic acid; Linker for MOF synthesis; Multifunctional aromatic acid monomer.
EINECS	Contact for details

Quality Control

Every batch of 5,5′-Phenylenebis(Methylene)-1,1′-3,3′-(Benzene-Tetracarboxylic Acid) is manufactured and tested under a strict quality management system. We ensure high lot-to-lot consistency and purity through advanced analytical techniques including HPLC, NMR, and FT-IR. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, the product must be stored in a cool, dry place, ideally at 15-25°C, under an inert atmosphere such as nitrogen or argon for long-term storage to prevent moisture absorption and potential degradation. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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