Alum
Colourless astringent compound that is a hydrated double sulphate of aluminium and potassium, used in water purification.
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Colourless astringent compound that is a hydrated double sulphate of aluminium and potassium, used in water purification.
Colourless astringent compound that is a hydrated double sulphate of aluminium and potassium, used in water purification.