Potassium Metabisulfite Powder Lab Grade *


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Potassium Metabisulfite, also known as Pyrosulfurous Acid, Dipotassium Salt, Dipotassium Disulfate, and Potassium Pyrosulfate, has the chemical formula K2S2O5 or K2O5S2. It appears as a white granular or powdery solid with a sharp rotten-egg-like (Sulfur Dioxide) odor. It is soluble in Water and insoluble in Ethanol at ambient conditions.

Chemically pure or Laboratory reagents are the two terms often used to describe Lab Grade chemicals. Lab Grade chemicals do not meet any accepted quality or purity requirements such as the ACS Grade, the USP Grade, and the FCC Grade, despite their acceptable purity. Due to its high purity, Potassium Metabisulfite, Lab Grade is highly recommended for labs and commercial applications.

Common Uses

  • Reagent
  • Sanitizing agent
  • Disinfecting agent

Commercial/Industrial Applications

  • Textile industry
  • Cotton printing
  • Purification of gold
  • Photography

Chemistry Table

PubChem CID 28019

Potassium Metabisulfite Lab Features:

Assay Min. 90.0%
Lead 2 mg/kg
Iron (Fe) 10 mg/kg
Selenium (Se) 5 mg/kg

Safety and Handling

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Potassium Metabisulfite Lab.

Potassium metabisulfite can irritate skin, eyes, and respiratory tract.

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