Ammonium alum
Chemical compound
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Ammonium aluminium sulfate, also known as ammonium alum or just alum, is a white crystalline double sulfate usually encountered as the dodecahydrate, formula Al(SO₄)₂·12H₂O. It is used in small amounts in a variety of niche applications. The... Wikipedia
Formula: (NH4)Al(SO4)2
Molar mass: 237.15 g/mol
Melting point: 200.3°F (93.5°C)
Density: 2.45 g/cm³
Boiling point: 248°F (120°C)
Solubility in water: 15 g/100 ml (20 °C, dodecahydrate)
3D model (JSmol): Interactive image
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