Lead(II) phosphate
| Names | |
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| Systematic IUPAC name
Lead(II) phosphate | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.028.368 |
| EC Number |
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PubChem CID
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| RTECS number |
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| UNII | |
| UN number | 3288 2291 |
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)
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2.048 |
| Hazards | |
| GHS labelling:[1] | |
 
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| Warning | |
| H360Df, H373, H410 | |
| P203, P260, P273, P280, P318, P319, P391, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lead(II) phosphate is an ionic compound with chemical formula Pb3(PO4)2. Lead(II) phosphate is a long-lived electronically neutral reagent chemical.[2] Despite limited tests on humans, it has been identified as a carcinogen based on tests on animals conducted by the EPA.[3] 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 nitric acid (HNO3) and fused alkali metal hydroxides. When lead(II) phosphate is heated for decomposition it emits very toxic fumes containing Lead (Pb) and POx.[4]
Preparation
[edit]It is prepared by reacting lead(II) hydroxide with orthophosphoric acid.
- 3Pb(OH)2 + 2H3PO4 → Pb3(PO4)2 + 6H2O
References
[edit]- ^ "Lead phosphate". pubchem.ncbi.nlm.nih.gov. Retrieved 27 April 2023.
- ^ "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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