Potassium fluoride

Name: Potassium fluoride
Brand: SIGALD
Price: 283 NZD

puriss. p.a., ≥99.0% (F)

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250 G

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About This Item

Linear Formula:

CAS Number:

7789-23-3

Molecular Weight:

58.10

Beilstein:

3902818

EC Number:

232-151-5

MDL number:

MFCD00011398

UNSPSC Code:

12352302

PubChem Substance ID:

329758836

Assay:

≥99.0% (F)

Form:

powder or crystals

Key Documents

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grade

puriss. p.a.

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 (SO₄^2-): ≤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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This Item	449148	60238	60238
Sigma-Aldrich 60239 Potassium fluoride	Sigma-Aldrich 449148 Potassium fluoride	Sigma-Aldrich 60238 Potassium fluoride	Sigma-Aldrich 60238 Potassium fluoride
form powder or crystals	form powder	form solid	form solid
assay ≥99.0% (F)	assay ≥99.9% trace metals basis	assay ≥99.5% (F)	assay ≥99.5% (F)
Quality Level 200	Quality Level 100	Quality Level 200	Quality Level 200
grade puriss. p.a.	grade -	grade -	grade -
cation traces Ag: ≤5 mg/kg, Ba: ≤5 mg/kg, Ca: ≤10 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, Li: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤5000 mg/kg, Pb: ≤5 mg/kg, Tl: ≤5 mg/kg, Al: ≤5 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, Mo: ≤5 mg/kg, Sr: ≤5 mg/kg, Bi: ≤5 mg/kg, Mg: ≤5 mg/kg, Zn: ≤5 mg/kg, Cr: ≤5 mg/kg, Ni: ≤5 mg/kg	cation traces -	cation traces Al: ≤5 mg/kg, As: ≤3 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: ≤2000 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg	cation traces Al: ≤5 mg/kg, As: ≤3 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: ≤2000 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
impurities ≤0.01% free acid (as HF), ≤0.1% potassium fluoro silicate (K₂SiF₆), ≤0.01% free alkali (as KOH)	impurities ≤1000.0 ppm Trace Metal Analysis	impurities insoluble matter, passes filter test, ≤0.01% free acid (as HF), ≤0.01% free alkali (as KOH), ≤0.1% potassium fluoro silicate (K₂SiF₆)	impurities insoluble matter, passes filter test, ≤0.01% free acid (as HF), ≤0.01% free alkali (as KOH), ≤0.1% potassium fluoro silicate (K₂SiF₆)

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

GHS06,GHS05

Signal Word

Danger

Hazard Statements

H301 + H311 + H331,H318

Precautionary Statements

P261 - P280 - P301 + P310 - P302 + P352 + P312 - P304 + P340 + P311 - P305 + P351 + P338

Hazard Classifications

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

Storage Class Code

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

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R. Bock

Aufschlussmethoden der anorg. & org. Chemie (1972)

Z. Sulcek et al.

Methods of Decomposition in Inorganic Analysis (1989)

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)

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)

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