Aluminium Sulphate

It is sometimes used in the human food industry as a firming agent for food starch, where it takes on E number E520, and in animal feed as a bactericide. Aluminum sulfate may be used as a deodorant, an astringent, or as a stiptic for superficial shaving wounds.

Aluminium sulfate is used in water purification and as a mordant in dyeing and printing textiles.