Chemical name: Alum
Formula: KAl(SO4)2·12H2O.
Uses:
- Aluminium-based alums have been used since antiquity, and are still important in many industrial processes.
- The most widely used alum is potassium alum. It has been used since antiquity as a flocculant to clarify turbid liquids, as a mordant in dyeing, and in tanning.
