Category
page 1Bisulfites
Sodium hydrogen sulfite
chemical compound
Potassium hydrogen sulfite
chemical compound
calcium bisulfite
chemical compound
hydrogensulfite
thumb|right|320px|Equilibrium reaction relating the two tautomers of bisulfite.
The bisulfite ion (IUPAC-recommended nomenclature: hydrogensulfite) is the ion . Salts containing the ion are also known as "sulfite lyes". Sodium bisulfite is used interchangeably with sodium metabisulfite (Na2S2O5). Sodium metabisulfite dissolves in water to give a solution of Na+.
Na2S2O5 + H2O → 2Na[HSO3]