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  • Sodium Metabisulfite
Sodium Metabisulfite

Sodium Metabisulfite

Sodium Metabisulfite

Sodium metabisulfite is an inorganic compound composed of sodium, sulfur and oxygen.  It's typically a white, or yellowish-white crystalline powder that easily dissolves in water,  which leaves that unpleasantly familiar sulfur smell.

In food, Sodium metabisulfite is commonly used as a food preservative for dried foods like  potato chips, raisins and apples, as well as fruit concentrate juices.

As a bleaching agent, it can be used in the pulp, textile, and paper industries.  Moreover, it is considered a reducing agent which donates hydrogen molecules to other substances in personal care products and cosmetics.

As an antibacterial, the chemical is also used in the process of purifying water,  cleaning water pipes and reverse osmosis membranes in desalinization equipment.