Potassium persulfate

CAS Registry Number®

7727-21-1
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CAS Name

Potassium persulfate

Molecular Formula

H2O8S2.2K

Cite this Page

Potassium persulfate.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=7727-21-1 (retrieved 2021-09-20) (CAS RN: 7727-21-1).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Density (1)

    2.477 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/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)

InChIKey

InChIKey=HANODVTTXFCTCR-UHFFFAOYSA-N

SMILES

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

Canonical SMILES

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

Other Names for this Substance

  • Peroxydisulfuric acid ([(HO)S(O)2]2O2), potassium salt (1:2)
  • Peroxydisulfuric acid ([(HO)S(O)2]2O2), dipotassium salt
  • Anthion
  • Dipotassium peroxydisulfate
  • Potassium persulfate

Deleted or Replaced CAS Registry Numbers

106015-10-5, 1001387-46-7, 1669428-35-6, 1801437-22-8, 2040915-35-1