Potassium aluminium sulfate
From Wikipedia, the free encyclopedia
Potassium aluminium sulfate, also known as potash alum, tawas, and potassium alum, is a chemical compound. Its chemical formula is KAl(SO4)2. It contains potassium, aluminium, and sulfate ions.
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Properties [change]
It is a white solid. It is acidic. It reacts with sodium bicarbonate to make carbon dioxide gas. It does exist naturally.
Preparation [change]
It is made by reacting aluminium sulfate with potassium sulfate.
Uses [change]
It is used to purify water. It is also used in deodorants. It is an antiseptic. It had several uses in the past, such as in dying clothes.
