Item Code: 16731-55-8Potassium metabisulfite, is a white crystalline powder with a pungent sulfur odour. The main use for the chemical is as an antioxidant or chemical sterilant. It is a sulfite and is chemically very similar to sodium metabisulfite, with which it is sometimes used interchangeably.
Item Code: 7681-57-4Sodium metabisulfite is an inorganic compound of chemical formula Na2S2O5. The name is sometimes referred to as disodium (metabisulfite, etc.). It is used as a disinfectant, antioxidant and preservative agent.