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
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.799
PubChem CID
UNII
CompTox Dashboard (EPA)
Properties
Chemical formula
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
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
Hazards
GHS pictograms
GHS Signal word Warning
GHS hazard statements
H335, H319, H315
GHS precautionary statements
P261, P302+352, P280, P305+351+338
Lethal dose or concentration (LD, LC):
LD50 (median dose)
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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