Description

5-(4-Carboxyphenoxy)Isophthalic Acid is a high-purity, multifunctional aromatic dicarboxylic acid derivative, serving as a critical building block in advanced polymer synthesis. This compound is valued for its ability to introduce both rigidity and specific functional groups into polymer backbones, directly impacting material performance. It is essential for R&D and production teams in the specialty polymers, high-performance resins, and pharmaceutical intermediates sectors seeking to develop materials with enhanced thermal stability and tailored chemical properties.

Application

• High-Performance Polymer Monomer: A key precursor for the synthesis of polyimides, polyamides, and polyesters, contributing to exceptional thermal and mechanical properties in engineering plastics and films.
• Liquid Crystal Polymer (LCP) Intermediate: Used in the production of aromatic monomers for LCPs, which are essential for electronics, connectors, and high-precision molded components.
• Pharmaceutical Intermediate: Serves as a sophisticated building block in the synthesis of complex active pharmaceutical ingredients (APIs) and diagnostic agents.
• Crosslinking Agent: Functions as a crosslinker in epoxy and other thermoset resin systems to improve heat resistance and structural integrity.
• Metal-Organic Framework (MOF) Synthesis: Employed as an organic linker in the construction of novel MOFs for gas storage, separation, and catalysis research.
• Specialty Coating Formulations: Incorporated into coatings and adhesives to enhance durability, chemical resistance, and adhesion to challenging substrates.

Basic Information

Item	Details
Product Name	5-(4-Carboxyphenoxy)Isophthalic Acid
CAS No.	60893-67-6
Molecular Formula	C16H10O7
Molecular Weight	314.25 g/mol
Synonyms	5-(4-Carboxyphenoxy)benzene-1,3-dicarboxylic acid; Isophthalic acid, 5-(4-carboxyphenoxy)-; 4,4'-Oxybis(benzoic acid); 5-(p-Carboxyphenoxy)isophthalic acid; 4-Carboxyphenoxyisophthalic Acid; Biphenyl-4,4'-diyldioxybis(4,1-phenylene)tetracarboxylic acid (related derivative); Contact for additional trade names.
EINECS	Contact for details

Quality Control

Every batch of 5-(4-Carboxyphenoxy)Isophthalic Acid is manufactured under a strict quality management system and undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Our standard industrial and R&D grades meet stringent in-house specifications. A detailed Certificate of Analysis (COA) documenting purity, assay, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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