Potassium hexafluoroarsenate
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| Names | |
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| IUPAC name
potassium hexafluoro-λ⁵-arsanuide | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.037.351 |
| EC Number |
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| KEGG | |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| AsF6K | |
| Molar mass | 228.0103 g·mol−1 |
| Appearance | white powder |
| Melting point | 400 °C (752 °F; 673 K) |
| Hazards | |
| GHS labelling:[1] | |
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| Danger | |
| H301, H331, H410 | |
| P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P321, P330, P391, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Potassium hexafluoroarsenate is an inorganic chemical compound with the chemical formula KAsF6.[2][3]
Potassium hexafluoroarsenate can be prepared by direct action of arsenic pentafluoride and potassium fluoride:
- AsF5 + KF → KAsF6
Also, it can be synthesized by the action of hydrofluoric acid on arsenic pentafluoride in the presence of potassium perbromate:[4]
- KBrO4 + 3HF + 2AsF5 + KF → KAsF6 + AsF6[H3O]
Also, potassium hexafluoroarsenate is synthesized by treating arsenic pentachloride and potassium chloride in the presence of hydrofluoric acid:
- AsCl5 + KCl + 6HF → KAsF6 + 6HCl