Potassium aluminate

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Potassium aluminate[1]
CAS number 12003-63-3
Molecular formula K2Al2O4
Molar mass 196.157 g/mol
Solubility in water very soluble
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Potassium aluminate is an inorganic compound with the formula K2Al2O4. It is used as a dyeing and printing mordant, as a paper sizing, as an accelerant in the setting of concrete[citation needed].


Potassium aluminate can be used to produce Potassium alum with Sulfuric acid in this reaction. K2Al2O4 + 4 H2S2O4 = 2 K2Al2O4(SO4)2 + 4 H2O


  1. ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–76. ISBN 0-8493-0594-2.