Description

3-Fluoro-Benzenesulfonic Acid is a versatile fluorinated aromatic sulfonic acid derivative, serving as a key building block and catalyst in advanced chemical synthesis. Its value lies in the unique combination of a strong sulfonic acid group and a fluorine substituent, which imparts specific electronic and steric properties for fine-tuning reactions. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediates: A crucial synthon in the synthesis of fluorinated drug candidates, including kinase inhibitors and antiviral agents.
• Agrochemical Synthesis: Used in the production of advanced herbicides and pesticides where the fluorine atom enhances biological activity and stability.
• Catalyst & Ligand Precursor: Acts as a precursor for generating metal-complexing ligands and solid acid catalysts in organic transformations.
• Polymer Modification: Employed to introduce sulfonic acid and fluorine functional groups into polymers, altering solubility and thermal properties.
• Dye & Pigment Manufacturing: Serves as an intermediate in the synthesis of specialized fluorinated colorants.
• Electrolyte Additive: Investigated for use in battery electrolytes to improve conductivity and stability.
• Chemical Research: A valuable reagent in academic and industrial R&D for exploring new fluorination and sulfonation methodologies.

Basic Information

Product Name	3-Fluoro-Benzenesulfonic Acid
CAS No.	657-47-6
Molecular Formula	C6H5FO3S
Molecular Weight	176.17 g/mol
Synonyms	m-Fluorobenzenesulfonic Acid; Benzenesulfonic acid, 3-fluoro-; 3-Fluorophenylsulfonic Acid; 3-FBSA; 3-Fluoro-1-benzenesulfonic Acid; m-Fluorophenylsulfonic Acid; 3-Fluorobenzene-1-sulfonic Acid
EINECS	211-500-8

Quality Control

Our 3-Fluoro-Benzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and titration, to ensure high purity and consistency. We provide full traceability and detailed Certificates of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring reliable and reproducible performance in sensitive syntheses.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and a strong acid/organic solvent; ensure containers are kept tightly sealed to exclude moisture and stored separately from bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	Contact for details

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