Cadmium phosphate
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| Names | |
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| IUPAC name
Cadmium phosphate | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.033.408 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| Cd3(PO4)2 | |
| Molar mass | 527.18 g/mol |
| Appearance | White solid[1] |
| Density | 5.17 g/cm3[1] |
| Melting point | 1,500 °C (2,730 °F; 1,770 K) |
| Insoluble | |
Solubility product (Ksp) |
2.53 × 10–33 |
| Hazards | |
| GHS labelling: | |
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| Danger | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Cadmium phosphate is an inorganic phosphate salt of cadmium, with the molecular formula Cd3(PO4)2.[2] It is a white, water-insoluble solid.
Tricadmium phosphate can be prepared by the reaction of cadmium chloride with diammonium phosphate at 800 °C:[3]
- 3 CdCl2 + 2 (NH4)2HPO4 → Cd3(PO4)2 + 4 NH4Cl + 2 HCl
The precipitation of aqueous cadmium ions with soluble phosphate sources, such as trisodium phosphate and phosphoric acid, does not produce Cd3(PO4)2, but instead produces a hydrate of cadmium with the formula Cd5H2(PO4)4·4H2O. When this compound is heated, it yields a mixture of cadmium phosphate and cadmium pyrophosphate, Cd2P2O7.[4]