Description

4,4'-Difluorodiphenylketone-3,3'-Disulfonic Acid is a high-purity, multi-functional aromatic sulfonic acid derivative characterized by its difluorinated and sulfonated biphenyl ketone structure. This compound serves as a critical advanced intermediate for synthesizing specialized polymers, dyes, and pharmaceutical active ingredients, where its unique electronic and steric properties are essential. It is primarily required by R&D chemists and process engineers in the fine chemical, specialty polymer, and life sciences industries seeking to develop next-generation materials with enhanced performance characteristics.

Application

• Polymer Synthesis: A key monomer for producing high-performance poly(arylene ether sulfone)s (PAES) and other engineering plastics with excellent thermal stability and chemical resistance.
• Pharmaceutical Intermediates: Used in the research and development of active pharmaceutical ingredients (APIs), particularly those requiring a sulfonated, fluorinated aromatic scaffold.
• Dye and Pigment Manufacturing: Serves as a precursor for creating advanced colorants and optical brighteners with superior fastness properties.
• Ligand and Catalyst Design: Utilized in organometallic chemistry to develop novel ligands for catalysis, leveraging the electron-withdrawing sulfonic acid groups.
• Ion-Exchange Materials: Acts as a building block for synthesizing specialized ion-exchange resins and membranes used in separation and purification processes.
• Electrolyte Additives: Investigated for use in advanced battery systems, such as fuel cells or lithium-ion batteries, to modify electrolyte properties.
• Surface Modification Agents: Employed to functionalize surfaces (e.g., of nanoparticles or polymers) to impart hydrophilicity or specific reactivity.
• Crosslinking Agent: Functions as a crosslinker in the formulation of specialty coatings, adhesives, or resins to enhance mechanical strength and durability.

Basic Information

Item	Detail
Product Name	4,4'-Difluorodiphenylketone-3,3'-Disulfonic Acid
CAS No.	625392-06-5
Molecular Formula	C13H6F2O7S2
Molecular Weight	376.31 g/mol
Synonyms	3,3'-Disulfo-4,4'-difluorobenzophenone; 4,4'-Difluorobenzophenone-3,3'-disulfonic Acid; Bis(4-fluoro-3-sulfophenyl) ketone; DFBP-DSA; 4,4'-Difluoro-3,3'-disulfobenzophenone; 4-Fluoro-3-sulfobenzoic acid 4-fluoro-3-sulfophenyl ester; 1,1'-(Carbonylbis(4-fluoro-3,1-phenylene))disulfonic acid
EINECS	Contact for details

Quality Control

Our 4,4'-Difluorodiphenylketone-3,3'-Disulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic identification (NMR, IR), to ensure it meets exacting specifications for use in sensitive applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical quality parameters. Our production adheres to cGMP principles where applicable, ensuring traceability and consistency for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent degradation due to moisture absorption. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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