Description

Sodium Dithionate Dihydrate is an inorganic salt with the chemical formula Na₂S₂O₆·2H₂O. This compound serves as a versatile reducing agent and sulfur source in various industrial chemical processes. It is primarily utilized in sectors such as chemical synthesis, textile processing, and water treatment. Its controlled reactivity makes it valuable for applications requiring precise redox chemistry.

Application

• Chemical Synthesis: Acts as a reducing agent in organic and inorganic synthesis reactions.
• Textile Industry: Used in dyeing and bleaching processes for fibers and fabrics.
• Water Treatment: Employed in certain wastewater treatment applications for its reducing properties.
• Analytical Chemistry: Serves as a reagent in specific titrimetric and colorimetric analytical methods.
• Pulp & Paper: Can be used in bleaching sequences for pulp.
• Laboratory Research: Utilized as a starting material or intermediate in research and development.

Basic Information

Product Name	Sodium Dithionate Dihydrate
CAS No.	10101-85-6
Molecular Formula	Na₂S₂O₆·2H₂O
Molecular Weight	242.13 g/mol
Synonyms	Sodium Hyposulfate Dihydrate; Sodium Metabisulfate Dihydrate; Disodium Dithionate Dihydrate; Sodium Dithionate (Na₂S₂O₆) Dihydrate; Dithionic Acid Disodium Salt Dihydrate; Natriumdithionat-Dihydrat (German); 二水合连二硫酸钠 (Chinese)
EINECS	Contact for details

Quality Control

Our Sodium Dithionate Dihydrate is manufactured under a rigorous quality management system. Each batch undergoes comprehensive testing to ensure it meets precise chemical and physical specifications. A 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 must be kept in a dry environment to prevent caking and decomposition.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Na₂S₂O₆·2H₂O)	≥ 98.0 %
pH (5% solution)	4.0 - 6.0
Water Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm

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