Description

2,4-Difluoro-Benzenesulfonic Acid is a versatile fluorinated aromatic sulfonic acid derivative, serving as a critical building block in advanced organic synthesis. Its value lies in the unique reactivity imparted by the fluorine atoms and sulfonic acid group, enabling precise molecular modifications. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key synthon for the production of active pharmaceutical ingredients (APIs), particularly in the synthesis of fluorine-containing drug candidates.
• Agrochemical Synthesis: Used in the manufacture of advanced herbicides, fungicides, and pesticides, where the difluoro motif enhances biological activity and stability.
• Ligand and Catalyst Preparation: Serves as a precursor for sulfonate ligands and organocatalysts used in asymmetric synthesis and polymerization reactions.
• Functional Material Production: Building block for sulfonated polymers, ion-exchange resins, and electrolytes for battery applications.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for exploring new fluorination and sulfonation methodologies.
• Dye and Pigment Intermediate: Used in the synthesis of specialized fluorinated dyes and colorants.

Basic Information

Product Name	2,4-Difluoro-Benzenesulfonic Acid
CAS No.	46020-63-7
Molecular Formula	C6H4F2O3S
Molecular Weight	194.16 g/mol
Synonyms	Benzenesulfonic acid, 2,4-difluoro-; 2,4-Difluorobenzenesulphonic acid; 2,4-DFBSA; 2,4-Difluorophenylsulfonic acid; (2,4-Difluorophenyl)sulfonic acid; 2,4-Difluoro-1-sulfobenzene; 46020-63-7 (CAS)
EINECS	Contact for details

Quality Control

Our 2,4-Difluoro-Benzenesulfonic Acid is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment and is available upon request.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture, which can affect 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)	≤ 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.