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What is an alum?

Updated: 9/13/2023
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9y ago

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An alum is a form of salt with pale crystals, used in dyeing, tanning, and medicines, or a similar double sulphate in which either or both of the potassium or aluminium is represented by other univalent or tervalent cations.

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9y ago
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Q: What is an alum?
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