Potassium sulfite
Potassium sulfite is the inorganic compound with the formula K2SO3. It is the salt of potassium cation and sulfite anion. It is a white solid that is highly soluble in water.Use
Potassium sulfite is widely used for preserving food and beverages.Potassium sulfite is produced by the thermal decomposition of potassium metabisulfite at 190°C: