Potassium Metabisulfite
Potassium metabisulfite (K₂S₂O₅) is a white crystalline powder widely used as a preservative, antioxidant, and antimicrobial agent in the food, beverage, and pharmaceutical industries. It releases sulfur dioxide (SO₂) when dissolved in water, which helps inhibit the growth of microorganisms and slows oxidation.
Chemical Properties
Chemical formula: K₂S₂O₅
Appearance: White or slightly yellow crystalline powder
Odor: Mild sulfur dioxide odor
Water solubility: Soluble in water

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