Description

Potassium Pyrosulfate is an inorganic salt widely used as a powerful fluxing agent and acidic catalyst in industrial processes. Its high-temperature stability and strong acidic nature make it a critical reagent for decomposing mineral samples and facilitating various chemical syntheses. This compound is essential for professionals in analytical laboratories, metallurgy, and specialty chemical manufacturing who require a reliable and efficient source of sulfur trioxide.

Application

• Analytical Chemistry: As a high-temperature flux for the decomposition of refractory minerals, oxides, and silicates in elemental analysis.
• Metallurgy & Mining: Used in assaying processes to dissolve ores and slags for the determination of precious and base metals.
• Chemical Synthesis: Acts as a sulfonating or condensing agent in organic synthesis and as a source of sulfur trioxide (SO₃).
• Laboratory Reagent: Serves as a standardized acidic reagent for titrations and other quantitative analytical procedures.
• Glass & Ceramics: Employed in the formulation of specialty glasses and ceramic frits where its fluxing properties are beneficial.
• Cleaning & Etching: Utilized in formulations for industrial cleaning and metal surface treatment due to its acidic character.

Basic Information

Product Name	Potassium Pyrosulfate
CAS No.	7790-62-7
Molecular Formula	K₂S₂O₇
Molecular Weight	254.32 g/mol
Synonyms	Potassium Disulfate; Dipotassium Disulfate; Pyrosulfuric Acid, Dipotassium Salt; Potassium Metabisulfate (Note: common misnomer); Potassium Acid Sulfate (Pyro); K₂S₂O₇; Disulfuric Acid, Dipotassium Salt
EINECS	232-212-3

Quality Control

Our Potassium Pyrosulfate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analysis, including assay, impurity profiling, and physical characterization, to meet exacting industry standards. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee compliance with your technical specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be kept in a dry environment to prevent caking and decomposition. Keep away from incompatible materials such as strong bases and organic compounds.

Specification

Item	Specification
Appearance	White crystalline powder or lumps
Identification (IR)	Conforms
Assay (K₂S₂O₇)	≥ 98.0 %
Water Insoluble Matter	≤ 0.05 %
Chloride (Cl)	≤ 0.005 %
Heavy Metals (as Pb)	≤ 0.002 %
Iron (Fe)	≤ 0.002 %
pH (5% Solution)	≤ 2.0

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