Description

Potassium p-Fluorobenzenesulfonate is an organosulfur salt that serves as a versatile building block in advanced chemical synthesis. Its value lies in the combination of the sulfonate anion, which imparts water solubility and stability, and the para-fluorinated aromatic ring, a key motif for introducing fluorine into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require a reliable source of high-purity fluorinated intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing fluorine-substituted aromatic systems to modulate bioavailability and metabolic stability.
• Agrochemical Synthesis: Used in the production of modern herbicides, fungicides, and insecticides where the fluorine atom enhances biological activity and environmental persistence.
• Liquid Crystal & Electronic Materials: Acts as a starting material for fluorinated monomers and charge-control agents used in display technologies and electronic chemicals.
• Polymer Modification: Employed to introduce sulfonate and fluorine functional groups into polymers, altering properties like hydrophilicity, chemical resistance, and ion-exchange capacity.
• Catalyst & Ligand Preparation: Serves as a feedstock for synthesizing specialized ligands and organocatalysts used in cross-coupling and other transition metal-catalyzed reactions.
• Research & Development: A valuable reagent for medicinal chemistry and process chemistry research in both academic and industrial R&D laboratories.

Basic Information

Product Name	Potassium p-Fluorobenzenesulfonate
CAS No.	52445-99-5
Molecular Formula	C6H4FKO3S
Molecular Weight	214.26 g/mol
Synonyms	Potassium 4-Fluorobenzenesulfonate; Benzenesulfonic acid, 4-fluoro-, potassium salt; p-Fluorobenzenesulfonic Acid Potassium Salt; 4-Fluorophenylsulfonic Acid Potassium Salt; Potassium 4-Fluorophenylsulfonate; Potassium (4-fluorophenyl)sulfonate; 4-Fluorobenzenesulfonic Acid Potassium Salt; Potassium P-Fluorobenzene Sulfonate
EINECS	Contact for details

Quality Control

Our Potassium p-Fluorobenzenesulfonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability, consistency, and compliance with your project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 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.