Tags: Chemical Compound, Chemical Substance.
Calcium sulfite or calcium sulphite is a chemical compound which is the calcium salt of sulfurous acid with the molecular formula CaSO3. As a food additive it is used as a preservative under the E number E226. It is commonly used in preserving wine cider fruit juice canned fruit and vegetables.CaSO3 is not a desirable compound in drywall due to its long-term chemical instability.
