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Cadmium phosphate

{{Short description|Chemical compound}}

{{distinguish|Cadmium phosphide}}

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| IUPACName = Cadmium phosphate

|Section1={{Chembox Identifiers

| CASNo = 13477-17-3

| ChemSpiderID = 24274

| EC_number = 236-764-9

| PubChem = 26060

| StdInChI=1S/3Cd.2H3O4P/c;;;2*1-5(2,3)4/h;;;2*(H3,1,2,3,4)/q3*+2;;/p-6

| StdInChIKey = NRGIRRZWCDKDMV-UHFFFAOYSA-H

| SMILES = [O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[Cd+2].[Cd+2].[Cd+2]

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| Section2 = {{Chembox Properties

| AtmosphericOHRateConstant =

| Appearance = White solid{{cite journal | last1=Cherif | first1=Fatima-Zahra | last2=Taibi | first2=Mhamed | last3=Boukhari | first3=Ali | last4=Assani | first4=Abderrazzak | last5=Saadi | first5=Mohamed | last6=El Ammari | first6=Lahcen | title=Crystal structure reinvestigation and spectroscopic analysis of tricadmium orthophosphate | journal=Acta Crystallographica Section E: Crystallographic Communications | volume=79 | issue=12 | date=2023-12-01 | issn=2056-9890 | pmid=38313125 | pmc=10833404 | doi=10.1107/S2056989023009775 | doi-access=free | pages=1155–1160 | bibcode=2023AcCrE..79.1155C | url=https://journals.iucr.org/e/issues/2023/12/00/oo2001/oo2001.pdf | access-date=2025-05-22}}

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| Density = 5.17 g/cm3

| Formula = Cd3(PO4)2

| HenryConstant =

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| MolarMass = 527.18 g/mol

| MeltingPt =

| MeltingPtC = 1500

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| Solubility = Insoluble

| SolubilityProduct= 2.53 × 10–33

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|Section7={{Chembox Hazards

| GHS_ref=[https://www.fishersci.com/store/msds?partNumber=AA4020118&productDescription=CADM+PHOSPHAT+ORTHO+50G&vendorId=VN00024248&countryCode=US&language=en]

| GHSPictograms = {{GHS07}} {{GHS08}}

| GHSSignalWord = Danger

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Cadmium phosphate is an inorganic phosphate salt of cadmium, with the molecular formula Cd3(PO4)2.{{cite web |title=Cadmium Phosphate |url=https://pubchem.ncbi.nlm.nih.gov/compound/Cadmium-phosphate |website=PubChem |access-date=22 May 2025}} 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:{{cite journal | last1=Dollase | first1=W. A. | last2=Feike | first2=M. | last3=Förster | first3=H. | last4=Schaller | first4=T. | last5=Schnell | first5=I. | last6=Sebald | first6=A. | last7=Steuernagel | first7=S. | title=A 2D 31 P MAS NMR Study of Polycrystalline Cd 3 (PO 4 ) 2 | journal=Journal of the American Chemical Society | volume=119 | issue=16 | date=1997-04-01 | issn=0002-7863 | doi=10.1021/ja9636808 | pages=3807–3810 | bibcode=1997JAChS.119.3807D | url=https://pubs.acs.org/doi/10.1021/ja9636808 | access-date=2025-05-22}}

: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.{{cite journal |author1=R. C. Ropp |author2=R. W. Mooney |title=Phosphates of Cadmium |journal=Journal of the American Chemical Society |date=1960 |volume=82 |issue=18 |pages=4848–4852 |doi=10.1021/ja01503a025 |bibcode=1960JAChS..82.4848R |language=en}}

Uses

Cadmium phosphate can be used as a fertilizer to provide phosphorus to crops for their growth.

See also

References

{{reflist}}

{{Cadmium compounds}}

{{Phosphates}}

Category:Inorganic compounds

Category:Phosphates

Category:Cadmium compounds