Description

Sodium Pyrosulfate is an inorganic salt with the chemical formula Na₂S₂O₇, widely recognized for its strong oxidizing and acidic properties. This compound is a critical reagent in various industrial processes, valued for its ability to act as a high-temperature flux and a source of sulfur trioxide. It is essential for manufacturers and laboratories in sectors such as metallurgy, chemical synthesis, and analytical chemistry, where precise and reactive materials are required for processing and analysis.

Application

• Metallurgical Flux: Used as a high-temperature flux in the analysis and processing of ores, particularly for decomposing refractory minerals.
• Chemical Synthesis: Serves as a sulfonating or oxidizing agent in the production of specialty chemicals and intermediates.
• Analytical Chemistry: Employed as a fusion agent for decomposing silicate samples and other insoluble materials prior to elemental analysis.
• Laboratory Reagent: Acts as a standard or reagent in various titrimetric and gravimetric analytical methods.
• Textile & Dye Industry: Utilized in specific dyeing and printing processes that require controlled acidic conditions.
• Water Treatment: Can be applied in certain industrial water conditioning processes.

Basic Information

Product Name	Sodium Pyrosulfate
CAS No.	13870-29-6
Molecular Formula	Na₂S₂O₇
Molecular Weight	222.10 g/mol
Synonyms	Disodium Disulfate; Sodium Metabisulfate; Disodium Pyrosulfate; Sodium Acid Sulfate (Pyro); Na₂S₂O₇; Sulfuric Acid, Disodium Salt
EINECS	237-625-0

Quality Control

Our Sodium Pyrosulfate is manufactured under strict quality management protocols to ensure batch-to-batch consistency and reliability. The product undergoes comprehensive testing, including assay, impurity profiling, and physical characterization, to meet technical and reagent-grade specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your requirements.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can compromise product quality and performance.

Specification

Item	Specification
Appearance	White crystalline powder or lumps
Identification (IR)	Conforms
Assay (Na₂S₂O₇)	≥ 98.0 %
Water Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.1 %
Heavy Metals (as Pb)	≤ 0.002 %
Iron (Fe)	≤ 0.005 %
Loss on Drying	≤ 0.5 %

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