Potassium aluminium fluoride (PAF) has a chemical composition which is not stable or specific due to its complex salt formulae of mix saltsof potassium aluminium & fluoride too. They are K3AlF6,K2AlF5 & KAlF4. It is an inorganic compound. Its application is utilized as flux in the smelting of secondary aluminum. To decrease or eliminate magnesium content of the melt. Used as a insecticide or salt flux etc.