Sodium metabisulfite is a white crystalline powder with strong SO2 odor. It is easy to dissolve in water, leaving an unpleasant and familiar smell of sulfur.
In food, sodium metabisulfite is usually used as food preservative
As a cleaner, the compound is also present in wine and beer because it is used as a bactericide and antioxidant in the brewing or fermentation of beer. If you or someone you know claims to be allergic to red wine, it may be because of the presence of sodium metabisulfite.
As an antibacterial agent, the chemical is also used for water purification, cleaning water pipe and reverse osmosis membrane in desalination equipment.
In addition, its acidity and corrosion resistance make it an effective substitute for sodium bisulfite, which is a chemical used in traditional darkroom photography.
In addition, sodium metabisulfite is also used as a bleaching agent in the manufacture of pulp and textiles, and as a reducing agent in medicine. It is also a preservative in cosmetics.
Sodium metabisulfite also has many other names, including sodium pyrosulfite; disodium salt pyrosulfurous acid; disulfurous acid, disodium salt, pyrosulfurous acid, disodium salt; sodium disulfite; sodium pyrosulfite; sodium disulfite; disodium disulfite.
Post time: Dec-29-2019