Description

Sodium Methanesulfinate is a versatile organosulfur compound widely used as a key reducing agent and sulfinate source in organic synthesis. Its value lies in its ability to facilitate critical reactions, such as radical additions and desulfurizations, under mild conditions, making it indispensable for producing fine chemicals and pharmaceuticals. This product is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries seeking efficient and reliable synthetic pathways.

Application

• Pharmaceutical Intermediate Synthesis: Acts as a crucial reagent in the production of sulfone-containing drug candidates and active pharmaceutical ingredients (APIs).
• Polymer & Resin Modification: Used as a chain transfer agent or initiator in radical polymerization processes to control molecular weight.
• Agrochemical Manufacturing: Employed in the synthesis of herbicides, fungicides, and other crop protection agents that require sulfinate functionality.
• Organic Synthesis Reagent: Serves as a nucleophilic sulfinating agent for the preparation of sulfones, sulfoxides, and other sulfur-based compounds.
• Photographic & Imaging Chemicals: Utilized in certain photographic developer formulations and photoresist materials.
• Textile & Leather Processing: Functions in specific dyeing and finishing processes where mild reducing conditions are needed.

Basic Information

Product Name	Sodium Methanesulfinate
CAS No.	20277-69-4
Molecular Formula	CH3NaO2S
Molecular Weight	102.09 g/mol
Synonyms	Sodium Methanesulfinate; Sodium Methylsulfinate; Methanesulfinic Acid Sodium Salt; Methylsulfinic Acid Sodium Salt; Sodium Methanesulphinate; Sodium Methylsulphinate; Sodium Methane Sulfinate; Sodium Methanesulfinate Dihydrate (when applicable)
EINECS	243-705-9

Quality Control

Our Sodium Methanesulfinate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment aligns with cGMP principles where applicable, ensuring the material meets the rigorous standards required for pharmaceutical and fine chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry place at a controlled room temperature (15-25°C). The container must be kept tightly sealed to minimize exposure to atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1 %
pH (5% solution)	7.0 - 9.0

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