1. Food & Healthcare Ingredients 

• Preservative: Sodium metabisulphite is widely used as a preservative in foods like dried fruits, potato products, and fruit juices to prevent spoilage and browning.
• Antioxidant: It acts as an antioxidant in food products, helping to maintain color and flavor, especially in processed and packaged foods.
• Disinfectant: In brewing and winemaking, Sodium metabisulphite is used as a disinfectant to sanitize equipment and prevent microbial growth in beverages.
• Antimicrobial Agent: It plays a crucial role in winemaking, where it is used to sterilize equipment and kill unwanted yeasts and bacteria during the fermentation process.
• Preservation of Wine: Sodium metabisulphite helps preserve wine by preventing oxidation and maintaining flavor stability throughout storage and aging.

2. Energy

• Drilling Fluids: Acts as a reducing agent in drilling fluids to control fluid viscosity and prevent oxidation.
• Corrosion Prevention: Used in processes to inhibit corrosion in pipelines and equipment by neutralizing oxygen and oxidizing agents.

3. Paints, Coatings & Adhesives

• Preservative: It helps in preventing the growth of microorganisms in water-based paints and coatings.
• Antioxidant: Used in formulations to maintain the stability of colorants and extend the shelf life of coatings by reducing oxidation.

4. Cleaning & Disinfectants

• Chelating Agent: Sodium metabisulphite is employed in industrial and household cleaning formulations to bind metal ions such as calcium and magnesium. This chelation helps prevent the formation of scale (hard water deposits), ensuring the cleaning agents can perform more effectively, particularly in hard water conditions.
• Dechlorination: In cleaning applications, Sodium metabisulphite is also used to neutralize chlorine in water, making it suitable for cleaning delicate surfaces and equipment where chlorine might cause damage.

5. Water Treatment

• Dechlorination Agent: Neutralizes chlorine and chloramine in water treatment systems to make water safe for consumption or industrial use.
• Oxygen Scavenger: Removes dissolved oxygen in boiler feedwater, preventing corrosion in pipelines and equipment.