... the year arouond . Twelve hydration Alum), potassium (alumina, say again: Alum, Alum, k ", potassium aluminum ", potassium Alum, is containing the potassium sulfate ... 12 molecular gesso, soluble in water, soluble in ethanol. Alum sexual flavour sour se, cold, the poisonous. Reason has ... action, astringent action etc, can be used as medicine. Alum can also used in preparation of aluminum salt, yeast, ...