Noun
metabisulfite (plural metabisulfites)
(inorganic chemistry) The oxyanion of sulfur S2O5 or any salt containing this ion
If the mead maker wishes to backsweeten the product or prevent it from oxidizing, potassium metabisulfite and potassium sorbate are added. Source: Internet
Plain water is ineffective at removing capsaicin, as are bleach, sodium metabisulfite and topical antacid suspensions. Source: Internet