Potassium peroxymonosulfate

Last updated
Potassium peroxymonosulfate
KHSO5.png
Names
IUPAC name
Potassium peroxysulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.158 OOjs UI icon edit-ltr-progressive.svg
PubChem CID
UNII
  • InChI=1S/K.H2O5S/c;1-5-6(2,3)4/h;1H,(H,2,3,4)/q+1;/p-1 X mark.svgN
    Key: OKBMCNHOEMXPTM-UHFFFAOYSA-M X mark.svgN
  • InChI=1S/K.H2O4S/c;1-4-5(2)3/h;1H,(H,2,3)/q+1;/p-1
  • Key: GZHFEBOLZPYNER-UHFFFAOYSA-M
  • InChI=1/K.H2O5S/c;1-5-6(2,3)4/h;1H,(H,2,3,4)/q+1;/p-1
    Key: OKBMCNHOEMXPTM-REWHXWOFAJ
  • [K+].[O-]S(=O)(=O)OO
Properties
KHSO5
Molar mass 152.2 g/mol
Appearancewhite solid
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Oxidant, corrosive
NFPA 704 (fire diamond)
[1]
NFPA 704.svgHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
3
0
1
Safety data sheet (SDS)ChemicalBook.com SDS [1]
Related compounds
Related compounds
 Potassium persulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
X mark.svgN  verify  (what is  Yes check.svgYX mark.svgN ?)

Potassium peroxymonosulfate, also referred to as potassium peroxysulfate and potassium monopersulfate (KMPS), is an inorganic compound with the formula KHSO5. It is the mono-potassium salt derived from peroxymonosulfuric acid (Caro's acid). It is a constituent of the widely used oxidizing agent called Oxone, which is a triple salt with the formula 2KHSO5·KHSO4·K2SO4. [2] [3] [4]

Contents

Organic-soluble derivatives of peroxymonosulfate include the tetra-n-butylammonium, tetraphenylphosphonium, and benzyltriphenylphosphonium salts: (nBu4N)HSO5, (Ph4P)HSO5, and (BnPh3P)HSO5. [5] [6] The ammonium and sodium salts of HSO−5 are also known.

Applications

The title compound is the active ingredient in oxone, which is a common disinfectant [7] and whitening agent. [2] It has also been investigated for use in processes aimed at delignification of wood. [8]

Underlying these uses is the high redox potential, which for potassium peroxymonosulfate, per se, is +1.81 V.

Structure

The structure of the monohydrate has been confirmed by X-ray crystallography. This analysis reveals the expected tetrahedral sulfur center, an O-O bond length of 146 picometers, and an SOOH dihedral angle of 90°. [9]


References

  1. 1 2 ChemicalBook.com Staff (2025-07-05). "Chemical Safety Data Sheet MSDS / SDS: potassium hydrogenperoxomonosulphate... CAS: 10058-23-8". ChemicalBook.com. Retrieved 3 November 2025.
  2. 1 2 Jakob, Harald; Leininger, Stefan; Lehmann, Thomas; Jacobi, Sylvia & Gutewort, Sven (15 July 2007). "Peroxo Compounds, Inorganic". In Ley, Claudia (ed.). Ullmann's Encyclopedia of Industrial Chemistry . Weinheim, Germany: Wiley-VCH. doi:10.1002/14356007.a19_177.pub2. ISBN   978-3-527-30673-2 . Retrieved 3 November 2025.{{cite encyclopedia}}: CS1 maint: multiple names: authors list (link)
  3. ↑ DuPont Staff (2008). "DuPont™ Oxone® Monopersulfate Compound / General Technical Attributes" (PDF). du Pont de Nemours. Wilmington, DE: E.I. du Pont de Nemours & Co. Retrieved 3 November 2025– via Ataman Kimya A.Ş.(AtamanKimya.com). The active ingredient of Oxone® is potassium peroxymonosulfate, KHSO5
  4. ↑ Crandall, Jack K.; Shi, Yian; Burke, Christopher P.; Buckley, Benjamin R. (14 September 2012) [2001]. Paquette, Leo A. (ed.). Encyclopedia of Reagents for Organic Synthesis . New York, NY: Wiley & Sons. doi:10.1002/047084289x.rp246.pub3. ISBN   9780470842898 . Retrieved 3 November 2025..
  5. ↑ Travis, B. R.; Ciaramitaro, B. P. & Borhan, B. (30 September 2002). "Preparation of Purified KHSO5·H2O and nBu4NHSO5 from Oxone by Simple and Efficient Methods" . Eur. J. Org. Chem.: 3429–3434. doi:10.1002/1099-0690(200210)2002:20<3429::AID-EJOC3429>3.0.CO;2-D . Retrieved 3 November 2025.{{cite journal}}: CS1 maint: multiple names: authors list (link) The article has been made available by an author, at this link.
  6. ↑ Page, P.C.B.; Barros, D.; Buckley, B.R.; Ardakani, A. & Marples, B.A. (2004). "Organocatalysis of Asymmetric Epoxidation Mediated by Iminium Salts under Nonaqueous Conditions" . J. Org. Chem. 69 (10): 3595–3597. doi:10.1021/jo035820j . Retrieved 3 November 2025.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. ↑ Wu, Mingsong; Xu, Xinyang; Xu, Xun (November 2014). "Algicidal and Bactericidal Effect of Potassium Monopersulfate Compound on Eutrophic Water" . Applied Mechanics and Materials. 707: 259. doi:10.4028/www.scientific.net/AMM.707.259. S2CID   98000605 . Retrieved 3 November 2025.
  8. ↑ Springer, E. L.; McSweeny, J. D. (1993). "Treatment of softwood kraft pulps with peroxymonosulfate before oxygen delignification". TAPPI Journal. 76 (8): 194–199. ISSN   0734-1415. Archived from the original on 2011-09-29. Retrieved 2011-05-14.
  9. ↑ Flanagan, John; Griffith, William P.; Skapski, Andrzej C. (1984). "The active principle of Caro's acid, HSO5–: X-ray crystal structure of KHSO5·H2O". J. Chem. Soc., Chem. Commun. (23): 1574–1575. doi:10.1039/C39840001574.
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