Alum powder/potassium aluminum sulfate dodecahydrate used in baking powder,water purification, leather tanning, dyeing, and fireproof textiles.

Alum powder/potassium aluminum sulfate dodecahydrate used in baking powder,water purification, leather tanning, dyeing, and  fireproof textiles. - 94695070

Close up of a pile of rock salt on a wooden surface.

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