60239

Potassium fluoride

puriss. p.a., ≥99.0% (F)

• Fórmula linear: KF
• Número CAS: 7789-23-3
• Peso molecular: 58.10
• Beilstein: 3902818
• Número CE: 232-151-5
• Número MDL: MFCD00011398
• Código UNSPSC: 12352302
• ID de substância PubChem: 329758836

Propriedades

• grau: puriss. p.a.
• Nível de qualidade: 200
• Ensaio: ≥99.0% (F)
• forma: powder or crystals
• Impurezas: ≤0.01% free acid (as HF); ≤0.01% free alkali (as KOH); ≤0.1% potassium fluoro silicate (K₂SiF₆)
• pf: 858 °C (lit.)
• traços de ânion: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• traços de cátion: 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
• cadeia de caracteres SMILES: [F-].[K+]
• InChI: 1S/FH.K/h1H;/q;+1/p-1
• chave InChI: NROKBHXJSPEDAR-UHFFFAOYSA-M

Descrição

Descrição geral

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.

Aplicação

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.

Outras notas

Reagent for the decomposition of silicates by fusion

Informações de segurança

• Pictogramas: GHS06,GHS05
• Palavra indicadora: Danger
• Frases de perigo: H301 + H311 + H331,H318
• Declarações de precaução: P261 - P280 - P301 + P310 - P302 + P352 + P312 - P304 + P340 + P311 - P305 + P351 + P338
• Classificações de perigo: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1
• Código de classe de armazenamento: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable