Description

4-(3,5-Dicarboxyphenoxy)Phthalic Acid is a high-purity, multifunctional aromatic dicarboxylic acid derivative. This compound is a critical advanced intermediate for synthesizing complex polymers and specialty chemicals, valued for its rigid, multi-branched molecular architecture. It is primarily utilized by R&D chemists and process engineers in the pharmaceutical, agrochemical, and high-performance materials sectors seeking to develop novel products with enhanced thermal and mechanical properties.

Application

• Pharmaceutical Intermediate: Serves as a key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring complex, polyfunctional aromatic cores.
• Polymer & Resin Synthesis: A crucial monomer for producing high-performance polyimides, polyesters, and polyamides, imparting excellent thermal stability and rigidity to the final polymer.
• Agrochemical Development: Used in research to create new herbicides, fungicides, and plant growth regulators with specific activity profiles.
• Ligand & Chelating Agent Precursor: Its multiple carboxyl groups make it a valuable starting material for synthesizing sophisticated ligands used in catalysis and metal ion sequestration.
• Advanced Material Research: Investigated for use in metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and other porous materials for gas storage and separation.
• Cross-linking Agent: Functions as a cross-linker in epoxy and other thermoset resin systems to enhance network density and performance.

Basic Information

Product Name	4-(3,5-Dicarboxyphenoxy)Phthalic Acid
CAS No.	499793-28-1
Molecular Formula	C16H10O9
Molecular Weight	346.25 g/mol
Synonyms	5-[4-(3,5-Dicarboxyphenoxy)benzene-1,2-dicarboxylic acid; 4-(3,5-Dicarboxyphenoxy)benzene-1,2-dicarboxylic Acid; 1,2,4,5-Benzenetetracarboxylic Acid, 3,3',5,5'-Tetracarboxydiphenyl Ether Derivative; 3,5-Bis(carboxyphenoxy)phthalic Acid; Tetracarboxylic Acid Diphenyl Ether Derivative; BPTA Derivative; Multifunctional Aromatic Acid Monomer
EINECS	Contact for details

Quality Control

Every batch of 4-(3,5-Dicarboxyphenoxy)Phthalic Acid is manufactured under a strict quality management system. Our products undergo rigorous analytical testing, including HPLC, NMR, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing batch-specific results are available upon request. We support cGMP and ISO compliant production for critical applications.

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 (moisture-sensitive) nature, the container must be kept sealed under dry conditions to prevent product degradation. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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