Chemical formula of potassium metabisulphite is:

• Potassium metabisulphite:
-K2S2O5, also referred to as potassium pyrosulfite, is a white, crystalline powder with a strong odor.
-It is mostly used as a chemical sterilant or antioxidant.
-It is sometimes used interchangeably with sodium metabisulfite because of its chemical similarity to a disulfite.
-The crystal structure of potassium metabisulfite is monoclinic.
Potassium metabisulfite is an inorganic compound. Its chemical formula is derived from its composition: two potassium ions (K⁺) and one metabisulfite ion (S₂O₅²⁻).