Chemistry:Cadmium phosphate
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Short description: Chemical compound
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| IUPAC name
Cadmium phosphate
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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)
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2.53 × 10–33 |
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| GHS Signal word | 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.
Synthesis
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]
Uses
Cadmium phosphate can be used as a fertilizer to provide phosphorus to crops for their growth.[2]
See also
References
- ↑ 1.0 1.1 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". Acta Crystallographica Section E: Crystallographic Communications 79 (12): 1155–1160. doi:10.1107/S2056989023009775. ISSN 2056-9890. PMID 38313125. PMC 10833404. Bibcode: 2023AcCrE..79.1155C. https://journals.iucr.org/e/issues/2023/12/00/oo2001/oo2001.pdf. Retrieved 2025-05-22.
- ↑ 2.0 2.1 "Cadmium Phosphate". https://pubchem.ncbi.nlm.nih.gov/compound/Cadmium-phosphate.
- ↑ 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. doi:10.1021/ja9636808. ISSN 0002-7863. Bibcode: 1997JAChS.119.3807D. https://pubs.acs.org/doi/10.1021/ja9636808. Retrieved 2025-05-22.
- ↑ R. C. Ropp; R. W. Mooney (1960). "Phosphates of Cadmium" (in en). Journal of the American Chemical Society 82 (18): 4848–4852. doi:10.1021/ja01503a025. Bibcode: 1960JAChS..82.4848R.
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