Tags: Chemical Compound, Chemical Substance.
Potassium alum potash alum tawas or potassium aluminum sulfate is a chemical compound: the potassium double sulfate of aluminium. Its chemical formula is KAl(SO4)2 and it is commonly found in its dodecahydrate form as KAl(SO4)2.12(H2O). Alum is the common name for this chemical compound given the nomenclature of potassium aluminum sulfate dodecahydrate. It is commonly used in water purification leather tanning dyeing[citation needed] fireproof textiles and baking powder.
