Potassium formate

Potassium formate^[1]

Names

Preferred IUPAC name

Potassium formate

Identifiers

CAS Number

590-29-4^Y

3D model (JSmol)

Interactive image

ChemSpider

11054^N

ECHA InfoCard

100.008.799

PubChem CID

11539

UNII

25I90B156L^Y

CompTox Dashboard (EPA)

DTXSID6029626

InChI

InChI=1S/CH2O2.K/c2-1-3;/h1H,(H,2,3);/q;+1/p-1^N
Key: WFIZEGIEIOHZCP-UHFFFAOYSA-M^N
InChI=1/CH2O2.K/c2-1-3;/h1H,(H,2,3);/q;+1/p-1
Key: WFIZEGIEIOHZCP-REWHXWOFAK

SMILES

C(=O)[O-].[K+]

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 (pK_b)

10.25

Hazards

GHS labelling:

Pictograms

Signal word

Warning

Hazard statements

H315, H319, H335

Precautionary statements

P261, P280, P302+P352, P305+P351+P338

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).

N verify (what is ^YN ?)

Infobox references

Chemical compound

Potassium formate, HCO₂K, HCOOK, or KHCO₂, 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 brines are sometimes used for heat transfer, despite being much more corrosive than many other liquid coolants, especially to zinc and aluminum but even to many steels,^[8] though some formulations are compatible with aluminum and steels.^[9]

References

^ Olsen, J C (editor), Van Nostrand's Chemical Annual, Chapman and Hall, London, 1934
^ "MSDS - 294454". www.sigmaaldrich.com. Retrieved 2019-03-18.
^ Concise Encyclopedia Chemistry, Mary Eagleson (1994), page 888. ISBN 978-3-11-011451-5
^ "Finnish Environment Institute > Main publications on the effect of de-icing chemicals on ground water". www.syke.fi. Retrieved 2015-11-18.
^ 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. Bibcode:2005EnST...39.5095H. doi:10.1021/es0482738. PMID 16053115.
^ "Module 71: Liquid desiccants for dehumidification in building air conditioning systems".
^ "Potassium Formate for Runway Deicing".
^ "Brines and antifreeze". Retrieved 2022-01-16.
^ "Technical information on "TYFOXIT F15-F50: Ready-to-Use, High-Performance Ultra Low Viscous Secondary Refrigerants for Applications Down to –50 °C"" (PDF). Retrieved 2022-01-16.