Potassium trifluoromethanesulfonate

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Potassium trifluoromethanesulfonate
Names
Preferred IUPAC name
potassium;trifluoromethanesulfonate
Other names
potassium triflate, trifluoromethanesulfonic acid potassium salt
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.106.411 Edit this at Wikidata
EC Number
  • 608-334-4
  • Key: GLGXXYFYZWQGEL-UHFFFAOYSA-M
  • C(F)(F)(F)S(=O)(=O)[O-].[K+]
Properties
CF3KO3S
Molar mass 188.16 g·mol−1
Appearance white powder
Melting point 235 °C (455 °F; 508 K)
Soluble
Hazards
GHS labelling:[1]
GHS07: Exclamation mark
Warning
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Potassium trifluoromethanesulfonate is the potassium salt of trifluoromethanesulphonic acid with the chemical formula CF3KO3S.[2][3][4]

Synthesis

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The compound can be prepared by neutralizing a warm aqueous solution of trifluoromethanesulphonic acid with potassium carbonate.[5]

Physical properties

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The compound forms a white hygroscopic powder.[6] Soluble in water.[7]

Chemical properties

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The compound reacts with sulfuric acid and, after distillation, produces trifluoromethanesulfonic acid.[8]

Uses

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Potassium trifluoromethanesulfonate is used as a reagent in the creation of guanine-quadruplex hybrid materials. Additionally, it functions as a supporting electrolyte during electrochemical investigations that provide evidence for the presence of gold anions in ethylenediamine.[7]

The compound can also be used as a component of the molten salt electrolyte in batteries.[9]

References

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  1. ^ "SAFETY DATA SHEET". Fisher Scientific. Retrieved 22 September 2025.
  2. ^ Siloxanes—Advances in Research and Application: 2013 Edition: ScholarlyBrief. ScholarlyEditions. 21 June 2013. p. 497. ISBN 978-1-4816-8019-6. Retrieved 22 September 2025.
  3. ^ Ma, Jianmin; Lu, Zhouguang; Ren, Yurong (26 February 2024). Rechargeable Battery Electrolytes: Electrochemical Energy Storage from Liquids to Solids. Royal Society of Chemistry. p. 73. ISBN 978-1-83916-737-9. Retrieved 22 September 2025.
  4. ^ Suschitzky, H. (22 October 2013). Progress in Heterocyclic Chemistry: A Critical Review of the 1990 Literature Preceded by Two Chapters on Current Heterocyclic Topics. Elsevier. p. 322. ISBN 978-1-4832-8750-8. Retrieved 22 September 2025.
  5. ^ "Potassium trifluoromethanesulfonate". Sigma Aldrich. Retrieved 22 September 2025.
  6. ^ "Potassium Trifluoromethanesulfonate". tcichemicals.com. Retrieved 22 September 2025.
  7. ^ a b "Potassium trifluoromethanesulfonate, 98% 10 g | Buy Online | Thermo Scientific Alfa Aesar | Fisher Scientific". Fisher Scientific. Retrieved 22 September 2025.
  8. ^ Howells, R. D.; Mc Cown, J. D. (1 February 1977). "Trifluoromethanesulfonic acid and derivatives". Chemical Reviews. 77 (1): 69–92. doi:10.1021/cr60305a005. ISSN 0009-2665. Retrieved 24 September 2025.
  9. ^ Tu, Xiaohua; Chu, Youqun; Ma, Chunan (1 February 2010). "New ternary molten salt electrolyte based on alkali metal triflates". Ionics. 16 (1): 81–84. doi:10.1007/s11581-009-0390-9. ISSN 1862-0760. Retrieved 24 September 2025.