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449148

Potassium fluoride

anhydrous, powder, ≥99.9% trace metals basis

Synonym(s):

Potassium monofluoride, Potassium monofluoride (KF)

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About This Item

Linear Formula:
KF
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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Quality Segment

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

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.

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pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Class I Designated Chemical Substances

prtr

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

449148-25G:4.548173939896E12 + 449148-5G:4.548173939902E12

jan

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