Knowledge

Is Sodium Metabisulfite an Oxidizer?

No, sodium metabisulfite (Na₂S₂O₅) is not considered an oxidizer. In fact, it is primarily used as a reducing agent in various chemical processes.

• Function: It donates electrons to other substances, helping to remove oxygen and prevent oxidation.
• Common Uses: Widely used as a food preservative, antioxidant, and in water treatment.

While sodium metabisulfite can participate in redox reactions, its main role is to reduce rather than to oxidize other compounds.