Description

Benzenesulfinic Acid Sodium Salt is an organosulfur compound widely used as a versatile reagent and intermediate in organic synthesis. Its significance lies in its role as a nucleophilic sulfinate anion source, enabling critical carbon-sulfur bond-forming reactions. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new molecules and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of sulfone and sulfonamide-based active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents that contain sulfonyl groups.
• Polymer Modification: Acts as a chain-transfer agent or functional monomer in the production of specialty polymers and resins.
• Organic Synthesis Reagent: Employed in nucleophilic aromatic substitution (SNAr) reactions and as a precursor to sulfonyl chlorides and other sulfonyl derivatives.
• Cross-Coupling Reactions: Serves as a coupling partner in palladium-catalyzed reactions for constructing biaryl sulfones.
• Photographic Chemicals: Used in certain photographic developer formulations.

Basic Information

Product Name	Benzenesulfinic Acid Sodium Salt
CAS No.	873-55-2
Molecular Formula	C6H5NaO2S
Molecular Weight	164.16 g/mol
Synonyms	Sodium benzenesulfinate; Benzenesulfinic acid sodium salt; Sodium phenylsulfinate; Phenylsulfinic acid sodium salt; Benzenesulfinate sodium; Sodium benzenesulphinate; Benzene sulfinic acid sodium salt
EINECS	212-842-8

Quality Control

Our Benzenesulfinic Acid Sodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the specifications required for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

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 easily oxidized; it is recommended to store under an inert atmosphere such as nitrogen or argon for long-term stability and to minimize degradation. Keep away from strong oxidizing agents.

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	≤ 0.5%

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