Description

1,3-Benzenedicarboxylic Acid, 5,5'-Sulfonylbis- is a high-purity, functionalized aromatic dicarboxylic acid derivative, serving as a critical building block for advanced polymer synthesis. Its unique structure, featuring both sulfonyl and carboxylic acid groups, enables the creation of high-performance materials with exceptional thermal stability and mechanical properties. This compound is essential for R&D and production in industries such as specialty polymers, high-temperature resins, and advanced material science.

Application

• High-Performance Polymer Synthesis: A key monomer for producing polyamides, polyesters, and polyimides with enhanced thermal and chemical resistance.
• Engineering Plastics & Resins: Used to manufacture specialty resins for automotive, aerospace, and electronics applications requiring durability under extreme conditions.
• Liquid Crystal Polymers (LCPs): Acts as a comonomer in the synthesis of LCPs for high-strength, precision-molded components.
• Pharmaceutical Intermediates: Serves as a sophisticated precursor in the multi-step synthesis of complex active pharmaceutical ingredients (APIs).
• Crosslinking Agent: Utilized in coatings, adhesives, and composite materials to improve crosslink density and performance.
• Advanced Material Research: A valuable reagent in R&D for developing novel organic frameworks, dendrimers, and other functional materials.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, 5,5'-Sulfonylbis-
CAS No.	64346-00-5
Molecular Formula	C14H8O8S
Molecular Weight	336.27 g/mol
Synonyms	5,5'-Sulfonylbis(isophthalic acid); Bis(3,5-dicarboxyphenyl) sulfone; 3,3',5,5'-Biphenyltetracarboxylic acid sulfone derivative; Sulfonylbis(1,3-benzenedicarboxylic acid); 5,5'-Sulfonyl diisophthalic acid; [1,1'-Sulfonylbis(3,5-phenylene)]dioic acid; Sulfonylbis(benzene-1,3-dicarboxylic acid)
EINECS	Contact for details

Quality Control

Our 1,3-Benzenedicarboxylic Acid, 5,5'-Sulfonylbis- is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and FTIR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and available upon request to support your quality assurance protocols.

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 prevent moisture absorption, which may affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 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.