Description

Sodium Hydroxymethanesulphinate is a powerful and versatile reducing agent, commercially significant for its ability to efficiently cleave disulfide bonds and decolorize dyes. Its core value proposition lies in providing a stable, water-soluble, and highly effective source of the hydroxymethanesulfinate anion for controlled reduction reactions. This compound is essential for industries requiring precise chemical reduction, including textile manufacturing, pulp and paper processing, and pharmaceutical synthesis.

Application

• Textile Industry: Primary use as a reducing agent in vat dyeing and sulfur dyeing processes for cotton and other cellulosic fibers.
• Pulp & Paper Bleaching: Employed in the bleaching of mechanical and chemical pulps to achieve high brightness levels.
• Chemical Synthesis: Used as a selective reducing agent in organic synthesis, particularly for the reduction of disulfides to thiols.
• Polymer Industry: Acts as a reducing agent or chain transfer agent in emulsion polymerization processes.
• Water Treatment: Applied in specific scenarios for the reduction and removal of heavy metals and chlorinated compounds from wastewater.
• Laboratory Research: Serves as a key reagent in biochemical and pharmaceutical research for protein analysis and drug intermediate synthesis.

Basic Information

Product Name	Sodium Hydroxymethanesulphinate
CAS No.	149-44-0
Molecular Formula	CH3NaO3S
Molecular Weight	118.09 g/mol
Synonyms	Sodium Formaldehyde Sulfoxylate; Rongalite; Sodium Hydroxymethylsulfinate; Formopon; Hydrolin; Sulfoxylate; Sodium Methanal Sulfoxylate; CH3NaO3S
EINECS	205-739-4

Quality Control

Our Sodium Hydroxymethanesulphinate is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications, including assay, purity, and moisture content. Certificates of Analysis (COA) documenting these results are provided with every shipment to guarantee traceability and batch-to-batch consistency for your critical processes.

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; prolonged exposure to air, moisture, or heat should be avoided to maintain stability and efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Sodium Hydroxymethanesulphinate)	≥ 98.0 %
pH (10% Solution)	9.0 - 11.0
Water Content	≤ 1.0 %
Iron (Fe)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 20 ppm

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