Aluminum sulfate is a chemical agent most commonly used in water purification, for the pH regulation of garden soil and in waste water treatment. Medically, it is primarily used as a coagulating agent in minor cuts and abrasions as well as deodorant.

Aluminium sulfate is also known as Filter Alum or Dialuminum trisulfate. It appears as a white crystalline solid in waterless form and a colorless liquid in solution form. Both the forms are non-toxic and non-combustible.