Sodium Metabisulphite – Industrial Chemical for Water Treatment and Manufacturing
Sodium Metabisulphite is an inorganic chemical compound widely used in water treatment, food processing, textile manufacturing, pulp and paper production, and various industrial applications. Also known as Sodium Metabisulfite, it is commonly supplied as a white crystalline powder with reducing and antioxidant properties. Its ability to react with certain oxidizing agents makes it useful for dechlorination, chemical preservation, and selected industrial processing operations.
CAS Number: 7681-57-4
Chemical Formula: Na₂S₂O₅
Applications of Sodium Metabisulphite
Sodium Metabisulphite is used in water treatment to neutralize residual chlorine in suitable water systems and industrial processes. In textile manufacturing, it serves as a reducing agent in selected dyeing, bleaching, and finishing operations. It is also used in pulp and paper processing and in certain chemical manufacturing applications where controlled reducing action is required.
Food-grade Sodium Metabisulphite may be used as a preservative or antioxidant in specific food and beverage products where permitted by applicable regulations. Only an appropriately certified food-grade product should be used for these applications. In addition, selected industrial processes use this chemical to support the removal or control of certain oxidizing substances.
Benefits of Sodium Metabisulphite
Sodium Metabisulphite offers useful reducing properties for a wide range of industrial processes. It can help neutralize residual chlorine, support selected chemical reactions, and protect compatible products against oxidation. Its versatility makes it a valuable raw material for water treatment, textile processing, and chemical manufacturing. The required concentration and grade depend on the intended application and relevant technical specifications.
Storage and Handling
Store Sodium Metabisulphite in a tightly sealed, moisture-resistant container in a cool, dry, well-ventilated area. Protect it from moisture, heat, and incompatible chemicals. When exposed to acids, it can release sulfur dioxide gas, which is hazardous to inhale. Use suitable personal protective equipment, avoid breathing dust, and follow the product-specific Safety Data Sheet (SDS) for handling, storage, spill response, and disposal.
Conclusion
Sodium Metabisulphite is a versatile industrial chemical used in water treatment, textile manufacturing, chemical processing, and regulated food applications. Its reducing and antioxidant properties make it useful for dechlorination and other specialized processes. Selecting the correct grade and following supplier specifications and safety requirements help ensure appropriate use across industrial applications.
