Potassium formate

Potassium formate, HCO2K, HCOOK, or CHKO2, is the potassium salt of formic acid. This strongly hygroscopic white solid[2] is an intermediate in the formate potash process for the production of potassium.[3] Potassium formate has also been studied as a potential environmentally friendly deicing salt for use on roads.[4][5] It has also been suggested for use in a less corrosive liquid desiccant.[6] A 52% solution of potassium formate has a freezing point of −60 °C (−76 °F).[7]

Potassium formate[1]
Names
IUPAC name
Potassium formate
Systematic IUPAC name
Potassium methanoate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.799
UNII
Properties
CHKO2
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
Hazards
GHS pictograms
GHS Signal word Warning
GHS hazard statements
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

References

  1. Olsen, J C (editor), Van Nostrand's Chemical Annual, Chapman and Hall, London, 1934
  2. "MSDS - 294454". www.sigmaaldrich.com. Retrieved 2019-03-18.
  3. Concise Encyclopedia Chemistry, Mary Eagleson (1994), page 888. ISBN 978-3-11-011451-5
  4. "Finnish Environment Institute > Main publications on the effect of de-icing chemicals on ground water". www.syke.fi. Retrieved 2015-11-18.
  5. 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.
  6. https://www.cibsejournal.com/cpd/modules/2014-12/
  7. https://aerospace.basf.com/potassium-formate-for-runway-deicing.html


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