Description

Benzoic Acid, 4,4'-[1,4-Phenylenebis(Sulfonyl)]Bis- (9Ci) is a specialized organic compound featuring a central benzene ring symmetrically linked to two benzoic acid groups via sulfonyl bridges. This unique molecular architecture makes it a valuable intermediate for synthesizing high-performance polymers and advanced functional materials. It is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring precise molecular design and thermal stability.

Application

• Polymer Synthesis: A key monomer or chain extender for producing high-temperature resistant polyesters, polyamides, and polyarylether sulfones (PAES).
• Pharmaceutical Intermediates: Used in the research and development of novel active pharmaceutical ingredients (APIs), particularly those requiring a rigid, symmetrical backbone.
• Agrochemicals: Serves as a building block for synthesizing advanced herbicides and fungicides with enhanced environmental stability.
• Liquid Crystal Polymers (LCPs): An important precursor for creating monomers used in high-performance LCPs for electronics and optical films.
• Cross-linking Agent: Utilized in epoxy and other thermoset resin systems to improve thermal and mechanical properties.
• Material Science Research: Employed in academic and industrial labs for developing new organic semiconductors and porous organic frameworks.

Basic Information

Product Name	Benzoic Acid, 4,4'-[1,4-Phenylenebis(Sulfonyl)]Bis- (9Ci)
CAS No.	55709-46-1
Molecular Formula	C20H14O8S2
Molecular Weight	454.45 g/mol
Synonyms	4,4'-(1,4-Phenylenedisulfonyl)dibenzoic Acid; 4,4'-(p-Phenylenedisulfonyl)dibenzoic Acid; 4,4'-[1,4-Phenylenebis(sulfonyl)]bis[benzoic acid]; 4,4'-Sulfonyldibenzoic Acid Derivative; p-Phenylenebis(sulfonyl-4,4'-dibenzoic acid); Bis(4-carboxyphenyl) sulfone derivative; Terephthaloyl bis(4-carboxyphenyl) sulfone (related structure)
EINECS	Contact for details

Quality Control

Our production of Benzoic Acid, 4,4'-[1,4-Phenylenebis(Sulfonyl)]Bis- (9Ci) adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. We employ advanced analytical techniques including HPLC, NMR, and IR spectroscopy for comprehensive characterization. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment. Our quality management system is designed to meet the rigorous standards required for research and industrial-scale synthesis.

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). Keep away from strong oxidizing agents, strong bases, and sources of heat. The container must be kept tightly sealed to prevent moisture absorption and contamination.

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%
Heavy Metals (as Pb)	≤ 10 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.