Phitkari is a common name that is used for the chemical compound which we use for medicinal purposes and other treatment processes. It has a chemical formula of KAl(SO4)2·12H2O.It is a mixed salt of a compound with Potassium Sulphate and Aluminium Sulphate which is being hydrated by Water molecules.This compound is widely known as Potash Alum or Potassium or chemically known as Potassium Sulphate Dodecahydrate. We used to extract it from alunite minerals and nowadays we can produce it industrially.