Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

View All Documentation

60240

Sigma-Aldrich

Potassium fluoride

purum p.a., ≥99.0% (F)

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
KF
CAS Number:
7789-23-3
Molecular Weight:
58.10
Beilstein/REAXYS Number:
3902818
EC Number:
232-151-5
MDL number:
MFCD00011398
UNSPSC Code:
12352302
PubChem Substance ID:
329758837
NACRES:
NA.21

vapor pressure

1.3 hPa ( 885 °C)

Quality Level

200

grade

purum p.a.

assay

≥99.0% (F)

form

powder or crystals

pH

8-9 (20 °C, 50 g/L)

mp

858 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤1000 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
Na: ≤5000 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

[F-].[K+]

InChI

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

InChI key

NROKBHXJSPEDAR-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

General description

Potassium fluoride (KF) on activated alumina is a highly reactive catalyst (basic in nature) for various organic reactions. High reactivity is due to the formation of potassium hexafluoroaluminiate, potassium hydroxide and potassium aluminate on the interaction of its fluoride ion with alumina. Celite coated with potassium fluoride participates in various hydrogen-bond-mediated reactions. Potassium fluoride on basic alumina in acetonitrile has been employed for the ultrasound-assisted deprotection of tert-butyldimethylsilyl ethers of phenols. Neutralization reaction of hydrofluoric acid with KOH or postassium carbonate affords KF.

Application

Potassium fluoride may be employed for doping the natural calcium phosphate (NP) for high yield synthesis of activated alkenes.
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.

pictograms

CorrosionSkull and crossbones
GHS05,GHS06

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_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Characterization of the actual catalytic agent in potassium fluoride on activated alumina systems.
Weinstock LM, et al.
Tetrahedron Letters, 27(33), 3845-3848 (1986)
Potassium fluoride on celite. A versatile reagent for C-, N-, O-, and S-alkylations.
Ando T and Yamawaki J.
Chemistry Letters (Jpn), 1, 45-46 (1979)
Natural phosphate doped with potassium fluoride and modified with sodium nitrate: Efficient catalysts for the Knoevenagel condensation.
Sebti S, et al.
Tetrahedron Letters, 43(10), 1813-1815 (2002)
Selective desilylation of tert-butyldimethylsilyl ethers of phenols using potassium fluoride-alumina and ultrasound.
Schmittling EA and Sawyer JS.
Tetrahedron Letters, 32(49), 7207-7210 (1991)
Eagleson M.
Concise Encyclopedia Chemistry, 887-887 (1994)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service