Commercial Sodium Metabisulfite

Commercial sodium metabisulfite is a white or yellowish crystalline powder with the chemical formula Na₂S₂O₅. It is commonly used in various industries due to its properties as a disinfectant, antioxidant, and preservative.

Key Characteristics

• Appearance: White or slightly yellow crystalline powder
• Chemical Formula: Na₂S₂O₅
• Solubility: Highly soluble in water
• Odor: Pungent, similar to sulfur dioxide

Commercial Uses

• As a food preservative (E223) to inhibit the growth of bacteria and fungi
• In water treatment plants to remove excess chlorine
• As a bleaching and dechlorinating agent in the pulp and textile industries
• In winemaking and brewing to sterilize equipment and inhibit wild yeast growth
• As a reducing agent in chemical processes

Commercial sodium metabisulfite is usually supplied in bulk form, and purity varies depending on the intended industrial application.