60239

Potassium fluoride

puriss. p.a., ≥99.0% (F)

• Wzór liniowy: KF
• Numer CAS: 7789-23-3
• Masa cząsteczkowa: 58.10
• EC Number: 232-151-5
• UNSPSC Code: 12352302
• PubChem Substance ID: 329758836
• Beilstein/REAXYS Number: 3902818
• MDL number: MFCD00011398
• Assay: ≥99.0% (F)
• Form: powder or crystals

Właściwości

• grade: puriss. p.a.
• Quality Segment: 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 (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

Opis

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

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

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS06,GHS05
• Słowo ostrzegawcze: Danger
• Kody zagrożeń: H301 + H311 + H331,H318
• Ostrzeżenia: 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
• Klasa składowania: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Co się dzieje?: WGK 1
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable