|Molecular formula||CHKO 2|
|External identifiers / databases|
|Molar mass||84.12 g mol −1|
1.91 g cm −3
165-168 ° C
very easy in water
|ΔH f 0||
−679.7 kJ / mol
|As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .|
Potassium formate is the potassium salt of formic acid with the formula K (HCOO). It is a colorless, deliquescent substance in a crystalline , rhombic form. The density is 1.91 g / cm 3 , the melting point is 167.5 ° C. Potassium formate occurs as an intermediate in the now technically insignificant formate-potash process for the production of potassium carbonate . The part of the name -formiat goes back to the Latin word formica (ant).
Potassium formate is used as a surface de-icing agent , for example on roads and airports, and in a study by the Finnish Environment Institute (SYKE) has proven to be relatively environmentally friendly compared to de-icing agents that contain salt .
Extraction and presentation
- David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-19.
- Alternative de-icer found ( Memento of September 27, 2007 in the Internet Archive ), press release of the Finnish Ministry of the Environment of October 2, 2004.
- T. Meisel, Z. Halmos, K. Seybold, E. Pungor: "The thermal decomposition of alkali metal formats", in: Journal of Thermal Analysis and Calorimetry , 1975 , 7 (1), pp. 73-80 doi : 10.1007 / BF01911627