Potassium formate

Structural formula
General
Surname	Potassium formate
Molecular formula	CHKO 2
Brief description	white solid
External identifiers / databases
CAS number 590-29-4 EC number 209-677-9 ECHA InfoCard 100.008.799 PubChem 2735122 ChemSpider 11054 Wikidata Q418356
properties
Molar mass	84.12 g mol −1
Physical state	firmly
density	1.91 g cm −3
Melting point	165-168 ° C
solubility	very easy in water
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
Thermodynamic properties
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

Potassium formate can be produced from potassium hydroxide and formic acid by the salt formation reaction .

${\displaystyle \mathrm {KOH+HCOOH\longrightarrow K(HCOO)+H_{2}O} }$

The synthesis from potassium carbonate and formic acid with the evolution of carbon dioxide is also possible.

${\displaystyle \mathrm {K_{2}CO_{3}+2\ HCOOH\longrightarrow 2\ K(HCOO)+CO_{2}+H_{2}O} }$

Individual evidence

1. ↑ ^{a b c} data sheet potassium formate from AlfaAesar, accessed on March 26, 2010 ( PDF )(JavaScript required) .
2. ↑ ^{a b c} Entry on potassium formate in the GESTIS substance database of the IFA , accessed on May 9, 2017(JavaScript required) .
3. ↑ 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.
4. ↑ 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.
5. ↑ 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