A6945412
Potassium fluoride , 99% , 7789-23-3
Synonym(s):
Potassium Fluoride;Potassium monofluoride;Potassium monofluoride (KF)
CAS NO.：7789-23-3
Empirical Formula: FK
Molecular Weight: 58.1
MDL number: MFCD00011398
EINECS: 232-151-5
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 858 °C (lit.) |
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| Boiling point: | 1505 °C |
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| Density | 2.48 |
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| vapor density | 2 (vs air) |
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| vapor pressure | 1.3 hPa (885 °C) |
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| refractive index | 1.363 |
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| Flash point: | 1505°C |
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| storage temp. | Store at +5°C to +30°C. |
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| solubility | H2O: 1 M at 20 °C, clear, colorless |
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| form | spray-dried |
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| Specific Gravity | 2.481 |
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| color | White |
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| PH | 7.0-8.5 (25℃, 1M in H2O) |
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| Odor | Odorless |
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| Water Solubility | 92.3 g/100 mL (18 ºC) |
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| Sensitive | Hygroscopic |
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| λmax | λ: 260 nm Amax: 0.01 λ: 280 nm Amax: 0.01 |
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| Crystal Structure | NaCl type |
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| crystal system | Cube |
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| Merck | 14,7632 |
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| BRN | 3902818 |
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| Space group | Fm3m |
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| Lattice constant |
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| Exposure limits | ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
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| Stability: | Stable. Protect from moisture. Incompatible with strong acids, strong bases. |
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| InChIKey | NROKBHXJSPEDAR-UHFFFAOYSA-M |
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| LogP | -0.77 at 25℃ |
Description and Uses
Potassium fluoride is used in metal finishing, batteries, coatings and photographic chemicals. It is utilized for the study of ion-specific swelling and de-swelling of ampholytic polymer gels as well as in the measurement of electronic polarizabilities of ions in polymers of alkali halides. It finds application in the electronic industry as a metal surface treatment product. It is used as a preservative, a food additive, a catalyzer and a water absorbing agent. In the Finkelstein reaction, it is actively involved in the conversion of chlorocarbons to fluorocarbons using polar solvents like dimethyl formamide and ethylene glycol.
Safety
| Symbol(GHS) |   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 | 25-23/24/25 |
| Safety Statements | 45-26-36/37 |
| RIDADR | UN 1812 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | TT0700000 |
| F | 3 |
| Hazard Note | Harmful |
| TSCA | Yes |
| HS Code | 2826 19 90 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Toxicity | MLD in guinea pigs (mg/kg): 250 orally, 350 s.c.; in frogs (mg/kg): 375 s.c. (Simonin) |
