Sodium hexachloroplatinate
Sodium hexachloroplatinate, the sodium salt of hexachloroplatinic acid, is an inorganic compound with the formula Na2[PtCl6], consisting of the sodium cation and the hexachloroplatinate anion. Sodium hexachloroplatinate is obtained as an intermediate in the preparation of Pt complexes, often starting with the dissolution of platinum in aqua regia.[1] As explained by Cox and Peters, anhydrous sodium hexachloroplatinate, which is yellow, tends to form the orange hexahydrate upon storage in humid air. The latter can be dehydrated upon heating at 110 ºC.[2]
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| Names | |
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| Other names
Sodium chloroplatinate Disodium platinum hexachloride | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.037.242 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| Na2[PtCl6] | |
| Molar mass | 453.78 g/mol (anhydrous) 561.87 g/mol (hexahydrate) |
| Appearance | Orange crystalline solid |
| Density | 2.5 g/mL |
| Melting point | 110 °C (230 °F; 383 K) |
| Soluble | |
| Hazards | |
EU classification (DSD) (outdated) |
Toxic (T) |
| R-phrases (outdated) | R25, R41, R42/43 |
| S-phrases (outdated) | S22, S24, S26, S36/37/39, S45 |
| Related compounds | |
Other anions |
Sodium hexafluorophosphate Sodium hexafluoroaluminate |
Other cations |
Potassium hexachloroplatinate Ammonium hexachloroplatinate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Reference
- Kauffman, George B.; Teter, Larry A. (1963). Recovery of Platinum from Laboratory Residues. Inorganic Syntheses. 7. pp. 232–236. doi:10.1002/9780470132388.ch61. ISBN 9780470132388.
- Cox, Lawrence E.; Peters, Dennis G. (1972). "Disodium Hexachloroplatinate(IV)". Inorganic Syntheses: 173–176. doi:10.1002/9780470132449.ch34. ISBN 9780470132449.
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