Potassium trifluoroacetate
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Melting point 135–137 °C (408–410 K)[1]
Boiling point 145 °C (418 K)[1]
Related compounds
Other anions
Potassium difluorobromoacetate
Other cations
Sodium trifluoroacetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Potassium trifluoroacetate is the trifluoroacetate salt of potassium, with the chemical formula CF3COOK. It can form an acid salt KH(CF3COO)2.[2]

Preparation and properties

Potassium trifluoroacetate can be obtained by reacting trifluoroacetic acid with potassium hydroxide, potassium carbonate or potassium bicarbonate.


It can decompose when heated and reaches the maximum decomposition rate at 220 °C. The products are potassium fluoride and some volatile products, such as carbon dioxide, carbon monoxide, trifluoroacetyl fluoride, etc.[3]


  1. ^ a b R. Dallenbach, P. Tissot (Feb 1977). "Properties of molten alkali metal trifluoroacetates: Part I. Study of the binary system CF3COOK-CF3COONa". Journal of Thermal Analysis. 11 (1): 61–69. doi:10.1007/BF02104084. ISSN 0022-5215. Retrieved 2019-03-22.
  2. ^ A. L. Macdonald, J. C. Speakman, D. Hadži (1972). "Crystal structures of the acid salts of some monobasic acids. Part XIV. Neutron-diffraction studies of potassium hydrogen bis(trifluoroacetate) and potassium deuterium bis(trifluoroacetate): crystals with short and symmetrical hydrogen bonds". J. Chem. Soc., Perkin Trans. 2 (7): 825–832. doi:10.1039/P29720000825. ISSN 0300-9580. Retrieved 2019-03-22.((cite journal)): CS1 maint: multiple names: authors list (link)
  3. ^ M. J. Baillie, D. H. Brown, K. C. Moss, D. W. A. Sharp (1968). "Anhydrous metal trifluoroacetates". Journal of the Chemical Society A: Inorganic, Physical, Theoretical: 3110. doi:10.1039/j19680003110. ISSN 0022-4944. Retrieved 2019-03-22.((cite journal)): CS1 maint: multiple names: authors list (link)