Potassium sulfite is a chemical compound.

Other related substances are sodium/potassium sulfite/bisulfite.

In its initial version (Crane Station, Maryland, 1968) the process was based on potassium sulfite, but the economic prognosis was poor.

Potassium metabisulfite has a monoclinic crystal structure which decomposes at 190 C, yielding potassium sulfite and sulfur dioxide:

Potassium sulfite (KSO) is a chemical compound which is the salt of potassium cation and sulfite anion.

Reaction of 1 with potassium hydroxide proceeds analogously except for the formation of barium 2-sulfinatoethanesulfonate (6) from reaction of potassium sulfite with unreacted 1.

It can be made several ways: reduction of potassium permanganate with potassium sulfite; reduction of potassium manganate with hydrogen peroxide and potassium hydroxide; and disproportionation when manganese dioxide is dissolved in potassium hydroxide.