Potassium formate

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Potassium formate[1]
Potassium formate.png
CAS number 590-29-4 YesY
PubChem 11539
ChemSpider 11054 N
Jmol-3D images Image 1
Molecular formula CHKO2
Molar mass 84.12 g mol−1
Appearance colorless crystals
Density 1.908 g/cm3
Melting point 167.5 °C (333.5 °F; 440.6 K)
Boiling point Decomposes
Solubility in water 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
GHS hazard statements H335, H319, H315
GHS precautionary statements P261, P302+352, P280, P305+351+338
LD50 5500 mg/kg (oral, mouse)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Potassium formate is the potassium salt of formic acid. It 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]


  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. ^ Pasi P. Hellstén, Jani M. Salminen, Kirsten S. Jørgensen, and 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.