Potassium aluminium sulfate

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Potassium aluminium sulfate

Potassium aluminium sulfate, or potash alum, or potassium alum, is a chemical compound. Its chemical formula is KAl(SO4)2. It contains potassium, aluminium, and sulfate ions.

Properties[change | change source]

It is a white acidic solid. It reacts with sodium bicarbonate to make carbon dioxide gas. It does exist naturally. It can often be found as a mineral.

Preparation[change | change source]

It is made by reacting aluminium sulfate with potassium sulfate.

Uses[change | change source]

It is used to purify water (H2O). It is also used in deodorants. It is an antiseptic. It had several uses in the past, such as in dying clothes. It is used to grow big crystals.

Related pages[change | change source]