60240

Kaliumfluorid

purum p.a., ≥99.0% (F)

• Lineare Formel: KF
• CAS-Nummer: 7789-23-3
• Molekulargewicht: 58.10
• Beilstein: 3902818
• EG-Nummer: 232-151-5
• MDL-Nummer: MFCD00011398
• UNSPSC-Code: 12352302
• PubChem Substanz-ID: 329758837
• NACRES: NA.21
• Assay: ≥99.0% (F)
• Form: powder or crystals

Eigenschaften

• Dampfdruck: 1.3 hPa ( 885 °C)
• Qualität: purum p.a.
• Assay: ≥99.0% (F)
• Form: powder or crystals
• pH-Wert: 8-9 (20 °C, 50 g/L)
• mp (Schmelzpunkt): 858 °C (lit.)
• Anionenspuren: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤1000 mg/kg
• Kationenspuren: 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
• InChIKey: NROKBHXJSPEDAR-UHFFFAOYSA-M

Beschreibung

Allgemeine Beschreibung

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]

Anwendung

Eine vielseitige Fluoridionenquelle für Studien ionenspezifischer Quellung und Entquellung ampholytischer Polymergele , Raumtemperatur Oxidation von Edelmetallen in HF und bei der Messung der elektronischen Polarisierbarkeit von Ionen in Polymeren von Alkalimetallhalogeniden.

Potassium fluoride may be employed for doping the natural calcium phosphate (NP) for high yield synthesis of activated alkenes.[5]

Sicherheitshinweise

• Piktogramme: GHS05,GHS06
• Signalwort: Danger
• H-Sätze: H301 + H311 + H331 - H318
• P-Sätze: P261 - P280 - P301 + P310 - P302 + P352 + P312 - P304 + P340 + P311 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1
• Lagerklassenschlüssel: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable