Potassium formate

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Potassium formate[1]
Potassium formate.png
IUPAC name
Potassium formate
Systematic IUPAC name
Potassium methanoate
3D model (JSmol)
ECHA InfoCard 100.008.799
Molar mass 84.115 g·mol−1
Appearance Colorless deliquescent crystals
Density 1.908 g/cm3
Melting point 167.5 °C (333.5 °F; 440.6 K)
Boiling point Decomposes
32.8 g/100 mL (0 °C)
331 g/100 mL (25°C)
657 g/100 mL (80 °C)
Solubility soluble in alcohol
insoluble in ether
Basicity (pKb) 10.25
GHS pictograms The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word Warning
H335, H319, H315
P261, P302+352, P280, P305+351+338
Lethal dose or concentration (LD, LC):
5500 mg/kg (oral, mouse)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Potassium formate, HCO2K, HCOOK, or CHKO2, is the potassium salt of formic acid. This white solid is an intermediate in the formate potash process for the production of potassium.[2] Potassium formate has also been studied as a potential environmentally friendly deicing salt for use on roads.[3][4]


  1. ^ Olsen, J C (editor), Van Nostrand's Chemical Annual, Chapman and Hall, London, 1934
  2. ^ Concise Encyclopedia Chemistry, Mary Eagleson (1994), page 888. ISBN 978-3-11-011451-5
  3. ^ "Finnish Environment Institute > Main publications on the effect of de-icing chemicals on ground water". www.syke.fi. Retrieved 2015-11-18.
  4. ^ Pasi P. Hellstén; Jani M. Salminen; Kirsten S. Jørgensen & Taina H. Nystén (2005). "Use of potassium formate in road winter deicing can reduce groundwater deterioration". Environ. Sci. Technol. 39 (13): 5095–5100. doi:10.1021/es0482738. PMID 16053115.