Description

1,2-Benzenedicarboxylic Acid, 4,4'-[1,3-Phenylenebis(Oxy)]Bis- is a specialized aromatic dicarboxylic acid derivative, recognized for its unique molecular structure incorporating a central phenylene ether bridge. This compound matters as a high-value chemical intermediate and building block, offering precise functionality for advanced material synthesis. It is primarily needed by manufacturers in the polymer, specialty chemical, and pharmaceutical industries seeking to develop products with enhanced thermal stability and specific chemical properties.

Application

• Polymer Synthesis: Key monomer for producing high-performance polyesters, polyamides, and polyimides, contributing to thermal and mechanical stability.
• Specialty Plasticizers: Used in the synthesis of novel plasticizers for engineering plastics and specialty polymer formulations.
• Liquid Crystal Polymers (LCPs): Serves as a rigid-rod monomeric unit in the production of high-temperature LCPs for electronics and advanced composites.
• Pharmaceutical Intermediates: Acts as a sophisticated building block in the multi-step synthesis of complex active pharmaceutical ingredients (APIs).
• Cross-linking Agent: Utilized in epoxy resin systems and other thermosetting polymers to enhance cross-link density and performance.
• Dye and Pigment Manufacturing: Intermediate in the synthesis of specialized organic pigments and colorants.
• Adhesive and Coating Resins: Incorporated into formulations for high-durability industrial adhesives and protective coatings.
• Research & Development: Employed in academic and industrial R&D for creating novel materials with tailored properties.

Basic Information

Product Name	1,2-Benzenedicarboxylic Acid, 4,4'-[1,3-Phenylenebis(Oxy)]Bis-
CAS No.	18959-91-6
Molecular Formula	C26H18O8
Molecular Weight	458.42 g/mol
Synonyms	4,4'-(1,3-Phenylenedioxy)diphthalic Acid; 4,4'-[1,3-Phenylenebis(oxy)]diphthalic Acid; 1,3-Bis(3,4-dicarboxyphenoxy)benzene; 4,4'-(m-Phenylenedioxy)bis(phthalic acid); Bis(3,4-dicarboxyphenoxy)-1,3-benzene; m-Phenylene bis(oxy-4,1-phthalic acid); Terephthalic Acid Derivative (m-Phenylene ether bridged); Contact for details on trade names.
EINECS	Contact for details

Quality Control

Our production of 1,2-Benzenedicarboxylic Acid, 4,4'-[1,3-Phenylenebis(Oxy)]Bis- adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistency, and traceability. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment supports applications requiring GMP-grade intermediates and materials for regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of ignition. For long-term storage, consider an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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