Description

3-(4-Carboxyphenoxy)-Phthalic Acid is a high-purity, multifunctional aromatic dicarboxylic acid derivative of significant interest in advanced material synthesis. This compound matters for its role as a key monomer or intermediate in creating polymers with tailored thermal and mechanical properties. Industries requiring specialty polyimides, polyesters, or liquid crystal polymers for electronics, aerospace, and high-performance coatings are the primary users of this material.

Application

• Polymer Synthesis: Serves as a critical monomer for the production of high-performance polyimides and polyesters with enhanced thermal stability.
• Liquid Crystal Polymers (LCPs): Used as a building block in the synthesis of LCPs for electronics and precision molding applications.
• Pharmaceutical Intermediates: Acts as a sophisticated synthetic intermediate in the development of complex active pharmaceutical ingredients (APIs).
• Advanced Material Research: Employed in R&D for creating novel organic frameworks, coatings, and adhesives with specific functional properties.
• Cross-linking Agent: Functions as a cross-linker in epoxy resin systems to improve hardness and chemical resistance.
• Dye and Pigment Intermediate: Utilized in the synthesis of specialized organic dyes and colorants.

Basic Information

Product Name	3-(4-Carboxyphenoxy)-Phthalic Acid
CAS No.	198330-12-0
Molecular Formula	C16H10O7
Molecular Weight	314.25 g/mol
Synonyms	4-(3,4-Dicarboxyphenoxy)benzoic Acid; 3,4-Bis(carboxy)phenoxybenzoic Acid; 4-Carboxyphenoxy-phthalic Acid; Phthalic Acid, 3-(4-carboxyphenoxy)-; 1,2-Benzenedicarboxylic acid, 3-(4-carboxy-1-oxyphenoxy)-; Benzoic acid, 4-(3,4-dicarboxyphenoxy)-; [1,1'-Biphenyl]-3,4,4'-tricarboxylic acid (alternative cyclic form)
EINECS	Contact for details

Quality Control

Our 3-(4-Carboxyphenoxy)-Phthalic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

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.

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.