Palladium(II) sulfate
Chemical compound
From Wikipedia, the free encyclopedia
Palladium(II) sulfate is an inorganic chemical compound with the formula PdSO4. It is a hygroscopic red-brown solid that forms the dihydrate, PdSO4·2H2O.[1]
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Other names
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| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.033.583 |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| PdSO4 | |
| Molar mass | 202.48 g/mol |
| Appearance | Red-brown solid (anhydrous) |
| Density | 4.2 g/cm3[1] |
| Melting point | 525 °C (977 °F; 798 K)[1] (decomposition) |
| Hydrolysis[2] | |
| Solubility | Soluble in conc. sulfuric acid[2] |
| Structure[1] | |
| Monoclinic | |
| C2/c | |
a = 7.84 Å, b = 5.18 Å, c = 7.91 Å α = 90°, β = 95.6°, γ = 90° | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
97.5 J/(mol·K) |
Std enthalpy of formation (ΔfH⦵298) |
−672.4 kJ/mol |
| Hazards | |
| GHS labelling: | |
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| Danger | |
| H302, H314 | |
| P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P363, P405, P501 | |
| Related compounds | |
Other cations |
Nickel(II) sulfate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation and properties
Palladium(II) sulfate is produced by the reaction of palladium metal with a mixture of nitric acid and sulfuric acid. It can also be produced by the reaction of palladium(II) sulfide and oxygen in dimethylformamide.[1][3][4][5]
When anhydrous palladium(II) sulfate absorbs moisture from the air, it forms a greenish-brown dihydrate. The anhydrous form can be regenerated by the heating of the dihydrate at 202 °C.[1][4]
Anhydrous palladium(II) sulfate decomposes to palladium(II) oxide at 525 °C releasing sulfur trioxide:[1]
- PdSO4 → PdO + SO3