Potassium pyrosulfate

CAS Registry Number®

7790-62-7

CAS Name

Potassium pyrosulfate

Molecular Formula

H2O7S2.2K

Molecular Mass

256.34

Cite this Page

Potassium pyrosulfate.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=7790-62-7 (retrieved 2025-03-28) (CAS RN: 7790-62-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    419 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)

InChIKey

InChIKey=ACABCPPEQRRHDN-UHFFFAOYSA-N

SMILES

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

Canonical SMILES

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

Other Names for this Substance

  • Disulfuric acid, potassium salt (1:2)
  • Pyrosulfuric acid, dipotassium salt
  • Disulfuric acid, dipotassium salt
  • Potassium pyrosulfate (K2S2O7)
  • Dipotassium pyrosulfate

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