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221872

Sigma-Aldrich

Potassium fluoride dihydrate

reagent grade, 98%

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About This Item

Linear Formula:
KF · 2H2O
CAS Number:
13455-21-5
Molecular Weight:
94.13
EC Number:
232-151-5
MDL number:
MFCD00149929
UNSPSC Code:
12352300
PubChem Substance ID:
329752284
NACRES:
NA.55

grade

reagent grade

Quality Level

100

Assay

98%

form

crystals or chunks

mp

41 °C (lit.)

SMILES string

[F-].[K+].[H]O[H].[H]O[H]

InChI

1S/FH.K.2H2O/h1H;;2*1H2/q;+1;;/p-1

InChI key

MZFXHSQFQLKKFD-UHFFFAOYSA-M

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Application

Potassium fluoride dihydrate may be used in the following processes:
  • As a source of active fluoride ion when used in combination with tetra-n-butylammonium chloride.
  • To generate tetrabutylammonium fluoride in situ by reacting with tetrabutylammonium hydrogensulfate, which can catalyze the esterification of carboxylic acids with alkyl halides and ring-opening of aziridines.
  • In combination with chlorotrimethylsilane for the desilylation of O-tert-butyldimethylsilyl ethers.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301 - H311 - H331

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral

Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 1

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’.

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Hydrogen Bonding in Potassium Fluoride Dihydrate: A Crystallographic, Spectroscopic, and Theoretical Study.
Preisinger A, et al.
Inorganic Chemistry, 33(21), 4774-4780 (1994)
Ren-Hua Fan et al.
The Journal of organic chemistry, 69(2), 335-338 (2004-01-17)
Potassium fluoride combined with tetrabutylammonium bisulfate is an efficient reagent to convert a variety of aziridines derived from cyclic and acyclic alkenes to beta-fluoro amine derivatives in high yield.
Efficient halogenation of unsaturated organoaluminum compounds with sulfonyl halides.
Ramazanov IR, et al.
Russ. J. Org. Chem., 49(3), 321-326 (2013)
A Mild and Efficient Desilylation of O-tert-Butyldimethylsilyl Ethers Mediated by Chlorotrimethylsilane and Potassium Fluoride Dihydrate in Acetonitrile
Peng Y & Li WDZ
Synlett, 2006(08), 1165-1168 (2006)
Esterification of carboxylic acids catalyzed by in situ generated tetraalkylammonium fluorides
Ooi T, et al.
Tetrahedron Letters, 42(52), 9245-9248 (2001)
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