Lead(II) phosphate
Lead(II) phosphate is an ionic compound with chemical formula Pb3(PO4)2. Lead(II) phosphate is a long-lived electronically neutral reagent chemical.[1] Despite limited tests on humans, it has been identified as a carcinogen based on tests on animals conducted by the EPA.[2] Lead(II) phosphate appears as hexagonal, colorless crystals or as a white powder. Lead(II) phosphate is insoluble in water and alcohol but soluble in HNO3 and has fixed alkali hydroxides. When lead(II) phosphate is heated for decomposition it emits very toxic fumes containing Pb and POx.[3]
| Names | |
|---|---|
| Systematic IUPAC name
Lead(II) phosphate | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.028.368 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| Pb3(PO4)2 | |
| Molar mass | 811.54272 g/mol |
| Appearance | white powder |
| Density | 6.9 g/cm3 |
| Melting point | 1,014 °C (1,857 °F; 1,287 K) |
| 0.000014 g/100 mL | |
| Solubility | insoluble in alcohol soluble in nitric acid |
| −182.0·10−6 cm3/mol | |
Refractive index (nD) |
2.048 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
It is prepared by reacting lead(II) acetate with sodium orthophosphate.
- 3 Pb(CH3COO)2 + 2 Na3PO4 → Pb3(PO4)2 + 6 Na(CH3COO)
References
- "Lead(II) phosphate". The Chemical Thesaurus. Retrieved 11 October 2010.
- Wright, John, (2003). Environmental Chemistry pg 211. New York (NY): Routledge.
- Lewis, Richard J., Lewis, Richard J. Sr., (2008). Hazardous chemicals desk reference (sixth ed.) pg 831. Hoboken (NJ): John Wiley & Sons, Inc.
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