Aluminium ammonium sulphate, also known as ammonium alum or just alum, is a white crystalline double sulfate usually encountered as the dodecahydr
A 1687 (OTTO) Aluminium ammonium sulphate, GR 99.5%+ Cas 7784-26-1 - used in laboratory reagent, but it is inexpensive and nontoxic, which invites many niche applications.