Potassium fluoride
SIGALD/60239 - puriss. p.a., ≥99.0% (F)
CAS Number: 7789-23-3
Empirical Formula (Hill Notation): FK
Molecular Weight: 58.10
EC Number: 232-151-5
MDL Number: MFCD00011398
Linear Formula: KF
Product Type: Chemical
| anion traces | chloride (Cl-): ≤50 mg/kg |
| sulfate (SO42-): ≤100 mg/kg | |
| assay | ≥99.0% (F) |
| 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 | |
| form | powder or crystals |
| grade | puriss. p.a. |
| impurities | ≤0.01% free acid (as HF) |
| ≤0.01% free alkali (as KOH) | |
| ≤0.1% potassium fluoro silicate (K2SiF6) | |
| InChI | 1S/FH.K/h1H;/q;+1/p-1 |
| InChI key | NROKBHXJSPEDAR-UHFFFAOYSA |
| mp | 858 °C (lit.) |
| Quality Level | 200  |
| SMILES string | [F-].[K+] |
| 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. |
| 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. |
| Other Notes: | Reagent for the decomposition of silicates by fusion |
| Symbol |   GHS05,GHS06 |
| 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 Codes | T |
| Risk Statements | 23/24/25 |
| Safety Statements | 26-45 |
| RIDADR | UN 1812 6.1 / PGIII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% (F) |
| mp | 858 °C (lit.) |
| UNSPSC | 12352300 |