Sodium Metabisulphite

Sodium metabisulphite, also known as sodium pyrosulfite, is a white, crystalline or powdery chemical compound with the formula Na₂S₂O₅.

• Chemical Formula: Na₂S₂O₅
• Appearance: White to yellowish crystalline powder
• Uses: It is commonly used as a disinfectant, antioxidant, and preservative agent. It is also used in food processing, water treatment, and some industrial processes.
• Other Names: Sodium pyrosulfite

In food, it is often used to preserve the color and freshness of dried fruits and vegetables. In laboratories and industries, it acts as a reducing agent and is also used for water purification.