what is potash alum?
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Explanation:
Potassium alum, potash alum, or potassium aluminium sulfate is a chemical compound: the double sulfate of potassium and aluminium, with chemical formula KAl(SO₄)₂. It is commonly encountered as the dodecahydrate, KAl(SO₄)₂·12H₂O.
What is potash alum used for?
Potassium alum is commonly used in water purification, leather tanning, dyeing, fireproof textiles, and baking powder as E number E522. It also has cosmetic uses as a deodorant, as an aftershave treatment and as a styptic for minor bleeding from shaving.
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