Description

4,4'-[Oxybis(Methylene)]Bisbenzoic Acid is a high-purity aromatic dicarboxylic acid derivative that serves as a critical building block in advanced polymer synthesis. This compound matters for its ability to introduce rigid, symmetrical biphenyl units into polymer backbones, significantly enhancing thermal stability and mechanical properties. It is primarily needed by manufacturers in the polymer, pharmaceutical, and specialty chemical industries for producing high-performance materials such as liquid crystal polymers (LCPs), polyesters, and polyamides.

Application

• Polymer Intermediate: A key monomer for synthesizing high-performance engineering plastics and liquid crystal polymers (LCPs) used in electronics and automotive components.
• Pharmaceutical Synthesis: Serves as a versatile building block in the development of active pharmaceutical ingredients (APIs) and drug candidates.
• Specialty Polyesters & Polyamides: Used to create polymers with enhanced thermal resistance and strength for fibers, films, and coatings.
• Crosslinking Agent: Functions as a crosslinker in resin systems to improve hardness and chemical resistance.
• Material Science Research: Employed in R&D for developing novel organic frameworks and advanced polymeric materials.
• Dye & Pigment Intermediate: Utilized in the synthesis of complex organic dyes and pigments.

Basic Information

Product Name	4,4'-[Oxybis(Methylene)]Bisbenzoic Acid
CAS No.	55255-64-6
Molecular Formula	C₁₆H₁₄O₅
Molecular Weight	286.28 g/mol
Synonyms	4,4'-(Oxybis(methylene))dibenzoic acid; Bis(4-carboxyphenyl)methyl ether; α,α'-Oxybis(p-toluic acid); Oxybis(methylenep-phenylene)dicarboxylic acid; 4-Carboxyphenyloxymethylbenzoic acid; p-Carboxyphenoxymethylbenzoic acid; [Oxybis(methylene-4,1-phenylene)]bisacetic acid (deprecated); Dibenzoic acid, 4,4'-(oxydimethylene)di-
EINECS	Contact for details

Quality Control

Our 4,4'-[Oxybis(Methylene)]Bisbenzoic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for sensitive applications like polymer and pharmaceutical synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

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	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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