Potassium alum

CAS Registry Number®

10043-67-1

CAS Name

Potassium alum

Molecular Formula

Al.2H2O4S.K

Molecular Mass

262.24

Cite this Page

Potassium alum.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=10043-67-1 (retrieved 2025-03-28) (CAS RN: 10043-67-1).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Density (1)

    1.725 g/cm³

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

InChI

InChI=1S/Al.K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)

InChIKey

InChIKey=VWRKUHIZDIMTAF-UHFFFAOYSA-N

SMILES

S(=O)(=O)(O)O.[Al].[K]

Canonical SMILES

[Al].[K].O=S(=O)(O)O

Other Names for this Substance

  • Sulfuric acid, aluminum potassium salt (2:1:1)
  • Aluminum potassium sulfate (AlK(SO4)2)
  • Aluminum potassium sulfate
  • Alum potassium
  • Burnt alum

View All

Deleted or Replaced CAS Registry Numbers

131315-49-6, 2242538-56-1, 2803568-36-5

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