Cadmium phosphate
| Names | |
|---|---|
| IUPAC name
Cadmium phosphate
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
| ECHA InfoCard | 100.033.408 |
| EC Number |
|
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
| |
| 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 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Cadmium phosphate is an inorganic phosphate salt of cadmium, with the molecular formula Cd3(PO4)2.[2] It is a white, water-insoluble solid.
Synthesis and structure
[edit]Neutral cadmium phosphate with the formula Cd3(PO4)2 is 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 the neutral compound Cd3(PO4)2, but instead produces a hydrate with the formula Cd5H2(PO4)4·4H2O. When this compound is heated, it yields a mixture of cadmium phosphate and cadmium pyrophosphate.[4]
See also
[edit]References
[edit]- ^ a b Cherif, Fatima-Zahra; Taibi, Mhamed; Boukhari, Ali; Assani, Abderrazzak; Saadi, Mohamed; El Ammari, Lahcen (2023-12-01). "Crystal structure reinvestigation and spectroscopic analysis of tricadmium orthophosphate" (PDF). Acta Crystallographica Section e Crystallographic Communications. 79 (12): 1155–1160. Bibcode:2023AcCrE..79.1155C. doi:10.1107/S2056989023009775. ISSN 2056-9890. PMC 10833404. PMID 38313125. Retrieved 2025-05-22.
- ^ "Cadmium Phosphate". PubChem. Retrieved 22 May 2025.
- ^ Dollase, W. A.; Feike, M.; Förster, H.; Schaller, T.; Schnell, I.; Sebald, A.; Steuernagel, S. (1997-04-01). "A 2D 31 P MAS NMR Study of Polycrystalline Cd 3 (PO 4 ) 2". Journal of the American Chemical Society. 119 (16): 3807–3810. Bibcode:1997JAChS.119.3807D. doi:10.1021/ja9636808. ISSN 0002-7863. Retrieved 2025-05-22.
- ^ R. C. Ropp; R. W. Mooney (1960). "Phosphates of Cadmium". Journal of the American Chemical Society. 82 (18): 4848–4852. Bibcode:1960JAChS..82.4848R. doi:10.1021/ja01503a025.