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Etymology from Wiktionary, CC BY-SA 4.0.
potash alum
Today it means: alum, hydrated potassium aluminium sulphate, formula K₂SO₄.Al₂(SO₄)₃.24H₂O Full definition →
Today it means: alum, hydrated potassium aluminium sulphate, formula K₂SO₄.Al₂(SO₄)₃.24H₂O Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.