Aluminium oxide(Al2O3), also known as alumina, is the main component of bauxite, the principal ore of aluminium.
Aluminium chloride (AlCl3) is manufactured on a large scale by the exothermic reaction of aluminium metal with chlorine or hydrogen chloride.
Alum is a salt that in chemistry is a combination of an alkali metal, such as sodium, potassium, or ammonium and a trivalent metal, such as aluminum, iron, or chromium.
The most common form, potassium aluminum sulfate, or potash alum, is one form that has been used in food processing.
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