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60239

Sigma-Aldrich

Potassium fluoride

puriss. p.a., ≥99.0% (F)

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250 G
$166.00

$166.00

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250 G
$166.00

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:
329758836
assay:
≥99.0% (F)
form:
powder or crystals

$166.00

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grade

puriss. p.a.

Quality Level

200

assay

≥99.0% (F)

form

powder or crystals

impurities

≤0.01% free acid (as HF)
≤0.01% free alkali (as KOH)
≤0.1% potassium fluoro silicate (K2SiF6)

mp

858 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

Ag: ≤5 mg/kg
Al: ≤5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤5000 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Tl: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

[F-].[K+]

InChI

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

InChI key

NROKBHXJSPEDAR-UHFFFAOYSA-M

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Show Differences

1 of 4

This Item
6024044914860238
Potassium fluoride puriss. p.a., ≥99.0% (F)

60239

Potassium fluoride

Potassium fluoride purum p.a., ≥99.0% (F)

60240

Potassium fluoride

Potassium fluoride anhydrous, powder, ≥99.9% trace metals basis

449148

Potassium fluoride

Potassium fluoride BioUltra, ≥99.5% (F)

60238

Potassium fluoride

form

powder or crystals

form

powder or crystals

form

powder

form

solid

assay

≥99.0% (F)

assay

≥99.0% (F)

assay

≥99.9% trace metals basis

assay

≥99.5% (F)

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

200

grade

puriss. p.a.

grade

purum p.a.

grade

-

grade

-

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

anion traces

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

anion traces

-

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

mp

858 °C (lit.)

mp

858 °C (lit.)

mp

858 °C (lit.)

mp

858 °C (lit.)

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.[1] Celite coated with potassium fluoride participates in various hydrogen-bond-mediated reactions.[2] Potassium fluoride on basic alumina in acetonitrile has been employed for the ultrasound-assisted deprotection of tert-butyldimethylsilyl ethers of phenols.[3] Neutralization reaction of hydrofluoric acid with KOH or postassium carbonate affords KF.[4]

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.

Other Notes

Reagent for the decomposition of silicates by fusion[5][6]

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_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM3211
BCCM4694
BCCK5409
BCCK1432
BCCL0680

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Z. Sulcek et al.
Methods of Decomposition in Inorganic Analysis (1989)
R. Bock
Aufschlussmethoden der anorg. & org. Chemie (1972)
Characterization of the actual catalytic agent in potassium fluoride on activated alumina systems.
Weinstock LM, et al.
Tetrahedron Letters, 27(33), 3845-3848 (1986)
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)
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)
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