60239

Potassium fluoride

puriss. p.a., ≥99.0% (F)

• Formula condensata: KF
• Numero CAS: 7789-23-3
• Peso molecolare: 58.10
• Beilstein: 3902818
• Numero CE: 232-151-5
• Numero MDL: MFCD00011398
• Codice UNSPSC: 12352302
• ID PubChem: 329758836
• Saggio: ≥99.0% (F)
• Stato: powder or crystals

Proprietà

• Grado: puriss. p.a.
• Livello qualitativo: 200
• Saggio: ≥99.0% (F)
• Stato: powder or crystals
• Impurezze: ≤0.01% free acid (as HF); ≤0.01% free alkali (as KOH); ≤0.1% potassium fluoro silicate (K₂SiF₆)
• Punto di fusione: 858 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• Cationi in tracce: 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
• Stringa SMILE: [F-].[K+]
• InChI: 1S/FH.K/h1H;/q;+1/p-1; NROKBHXJSPEDAR-UHFFFAOYSA-M

Descrizione

Descrizione generale

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.

Applicazioni

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.

Altre note

Reagent for the decomposition of silicates by fusion

Informazioni sulla sicurezza

• Pittogrammi: GHS06,GHS05
• Avvertenze: Danger
• Indicazioni di pericolo: H301 + H311 + H331,H318
• Consigli di prudenza: P261 - P280 - P301 + P310 - P302 + P352 + P312 - P304 + P340 + P311 - P305 + P351 + P338
• Classi di pericolo: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1
• Codice della classe di stoccaggio: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable