Potassium trifluoromethanesulfonate

Potassium trifluoromethanesulfonate

Names
Preferred IUPAC name potassium;trifluoromethanesulfonate
Other names potassium triflate, trifluoromethanesulfonic acid potassium salt
Identifiers
CAS Number	2926-27-4  Y
3D model (JSmol)	Interactive image
ChemSpider	2015749
ECHA InfoCard	100.106.411
EC Number	608-334-4
PubChem CID	23664779
CompTox Dashboard (EPA)	DTXSID50635402
InChI Key: GLGXXYFYZWQGEL-UHFFFAOYSA-M
SMILES C(F)(F)(F)S(=O)(=O)[O-].[K+]
Properties
Chemical formula	CF3KO3S
Molar mass	188.16 g·mol−1
Appearance	white powder
Melting point	235 °C (455 °F; 508 K)
Solubility in water	Soluble
Hazards
GHS labelling: [1]
Pictograms
Signal word	Warning
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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

Synthesis

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

Physical properties

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

Chemical properties

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

Uses

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

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. "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.