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Potassium Alum

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Potassium Alum
Chemical Product

Potassium Alum

Molecular FormulaKAl(SO4)2·12H2O CAS7784-24-9 Molecular Weight474.39 g/mol
SynonymsAluminium potassium sulfate dodecahydrate, Alum
Potassium Alum is a double sulfate of aluminium and potassium supplied as colourless crystals or powder. It is used as a coagulant, mordant and astringent.
- Water Treatment: Coagulant for clarification. - Textile & Leather: Mordant and tawing agent. - Cosmetics: Astringent in deodorant stones and aftershaves. - Food Industry: Firming agent (E522).
AppearanceColorless or white crystals or powder
OdorOdorless
Molecular FormulaKAl(SO4)2·12H2O
Molecular Weight474.39 g/mol
Melting Point92.5 °C
Density1.757 g/cm³ at 25 °C
SolubilitySoluble in water
IUPAC Namealuminum;potassium;disulfate;dodecahydrate
Molecular FormulaKAl(SO4)2·12H2O
Molecular Weight474.39 g/mol
SMILESO.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Al+3].[K+]
InChIKeyGNHOJBNSNUXZQA-UHFFFAOYSA-J

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