Description

Sodium Dithionate is an inorganic salt with the chemical formula Na₂S₂O₆. This compound serves as a versatile reducing agent and sulfur source in various industrial chemical processes. It is primarily utilized in sectors such as textile manufacturing, water treatment, and specialty chemical synthesis where controlled sulfur chemistry is required.

Application

• Textile Industry: Used as a reducing agent in dyeing and printing processes, particularly for sulfur and vat dyes.
• Water Treatment: Acts as a dechlorinating agent and in the removal of heavy metals from industrial wastewater.
• Chemical Synthesis: Serves as a sulfur source or mild reducing agent in the production of other sulfur-containing compounds.
• Pulp & Paper: Employed in bleaching sequences and as a stabilizer for hydrogen peroxide.
• Photography: Used in certain photographic developing solutions as a preservative.
• Laboratory Reagent: Functions as an analytical reagent in redox titrations and chemical analysis.

Basic Information

Product Name	Sodium Dithionate
CAS No.	14970-71-9
Molecular Formula	Na₂S₂O₆
Molecular Weight	206.11 g/mol
Synonyms	Sodium Hyposulfate; Disodium Dithionate; Sodium Metabisulfite (historical/incorrect); Dithionic Acid, Disodium Salt; Na₂S₂O₆; Sodium Sulfoxylate (context-dependent)
EINECS	239-072-1

Quality Control

Our Sodium Dithionate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for purity, identity, and performance. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with every shipment to guarantee traceability and batch-to-batch consistency for your process.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent caking and degradation. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Na₂S₂O₆)	≥ 98.0 %
pH (5% solution)	4.0 - 6.0
Water Insoluble Matter	≤ 0.1 %
Chloride (as Cl)	≤ 0.01 %
Sulfate (as SO₄)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm
Loss on Drying	≤ 0.5 %

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