Aluminium Sulphate

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.


Molar Weight342.15 g/mol (anhydrous); 666.44 g/mol (octadecahydrate)
Melting Point770 °C
Boiling Point759.71 °C
Density2.672 g/cm3 (anhydrous); 1.62 g/cm3 (octadecahydrate)
FormsLiquid, Yellow

Uses and Applications

Key applications

  • Wastewater treatment
  • Leather processing
  • Metal finishing
  • Pulp and paper
  • Textile handling
  • Solvents
  • Paint and Coatings


  • Pulp & Paper
  • Water Treatment

Synonyms: Aluminiumssalt, Alunogenite, Cake alumimium, Filter aluminium, Alum, Aluminum Sulphate, Liquid Alum, Sulfate Aluminum Solution, Sulphuric Acid, Aluminum Salt

Chemical Formula: Al2(SO4)3

CAS Number: 10043-01-3