Is Sodium Metabisulfite a Sulfite?
Yes, sodium metabisulfite is considered a sulfite.
Sodium metabisulfite (chemical formula: Na2S2O5) is a compound that releases sulfite ions (SO32−) when dissolved in water. It is widely used as a preservative and antioxidant, especially in food and beverages.
- Category: Sulfites
- Main use: Preservative, antioxidant, and disinfectant
- Related compounds: Sodium sulfite, sodium bisulfite
Because sodium metabisulfite releases sulfite ions, it is regulated as a sulfite and labeled as such in food products due to potential allergic reactions in sensitive individuals.
