What is sodium metabisulfite?

Sodium metabisulphite or sodium pyrosulphite is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. Sodium and potassium metabisulfite have many major and nice uses. It is widely used for preserving food and beverages. Sodium metabisulfite is added as an excipient to medications which contain adrenaline (epinephrine), in …

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