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449148

Potassium fluoride

Name: Potassium fluoride
Brand: ALDRICH

anhydrous, powder, ≥99.9% trace metals basis

Synonym(s):

Potassium monofluoride, Potassium monofluoride (KF)

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About This Item

Linear Formula:

CAS Number:

7789-23-3

Molecular Weight:

58.10

UNSPSC Code:

12352302

NACRES:

NA.23

PubChem Substance ID:

24868456

EC Number:

232-151-5

Beilstein/REAXYS Number:

3902818

MDL number:

MFCD00011398

Assay:

≥99.9% trace metals basis

Grade:

anhydrous

Form:

powder

Solubility:

water: soluble (923 g/l at 18 °C (64 °F))

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Properties

Quality Level

100

grade

anhydrous

assay

≥99.9% trace metals basis

form

powder

reaction suitability

core: potassium

impurities

≤1000.0 ppm Trace Metal Analysis

mp

858 °C (lit.)

solubility

water: soluble (923 g/l at 18 °C (64 °F))

cation traces

Cr: 1.6 ppm, Cs: 7.3 ppm, Cu: 0 ppm, Fe: 7.9 ppm, Li: 0.4 ppm, Mg: 0.3 ppm, Na: 514.2 ppm, Rb: 44.4 ppm

SMILES string

[F-].[K+]

InChI

1S/FH.K/h1H;/q;+1/p-1

InChI key

NROKBHXJSPEDAR-UHFFFAOYSA-M

Description

General description

Potassium fluoride is a white crystalline solid that is highly soluble in water. It is a strong base widely used in the field of catalysis, polymer synthesis, and semiconductor devices. KF has a relatively high melting point. It dissolves well in hydrofluoric acid. However, KF is insoluble in alcohol.

Application

A versatile fluoride ion source used in a study of ion-specific swelling and de-swelling of ampholytic polymer gels, in the room temperature oxidation of noble metals in HF, and in the measurement of electronic polarizabilities of ions in polymers of alkali halides.

Potassium fluoride can be used:

To fabricate CIGS thin films solar cells. Efficiency increased by up to 21.7% after KF postdeposition treatment. This was due to the formation of a K-containing layer on the CIGS surface, which resulted in increased surface reactivity due to the formation of a bilayer structure in which a K—In—Se species covers the CIGSe compound.
To fabricate 2D vanadium carbide MXene for supercapacitor electrodes.
To synthesize sulfonyl fluoride through electrochemical oxidative coupling.
As an electrolyte additive for Li-ion batteries.
As a catalyst for ring-opening fluorination of cyclic thioethers.
To synthesize solid base catalysts, KF/Ca−Mg−Al hydrotalcite for the production of Biodiesel via transesterification reactions.