Aluminium potassium sulfate dodecahydrate EPR Ph.Eur.

AlK(SO₄)₂·12H₂O
Potassium aluminium sulfate, Alum potassium, Potas
M.W: 474.39  CAS: 7784-24-9  EC: 233-141-3  

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• Assay 99 – 100.5%
• Appearance Conforms
• Iron (Fe) ? 0.01%
• Identification A Conforms
• Appearance of solution Clear and colourness
• pH (10%; water) 3 – 5
• Ammonium (NH₄) ? 0.2%
• Heavy metals (Pb) ? 0.002%

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