Lead(II) phosphate

Lead(II) phosphate
Names
	Systematic IUPAC name Lead(II) phosphate
Identifiers
CAS Number	7446-27-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	22442 ;
ECHA InfoCard	100.028.368
EC Number	231-205-5;
PubChem CID	24009;
RTECS number	OG3675000;
UNII	62I1T06190 ;
UN number	3288 2291
CompTox Dashboard (EPA)	DTXSID5064706 ;
	InChI InChI=1S/2H3O4P.3Pb/c21-5(2,3)4;;;/h2(H3,1,2,3,4);;;/q;;3*+2/p-6 Key: HUTDDBSSHVOYJR-UHFFFAOYSA-H ;
	SMILES [O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[Pb+2].[Pb+2].[Pb+2];
Properties
Chemical formula	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)
Solubility in water	0.000014 g/100 mL
Solubility	insoluble in alcohol ; soluble in nitric acid
Magnetic susceptibility (χ)	−182.0·10−6 cm3/mol
Refractive index (nD)	2.048
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H360Df, H373, H410
Precautionary statements	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). verify (what is ?) Infobox references

Lead(II) phosphate is an ionic compound with chemical formula Pb₃(P O₄)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 PO_x.^[4]

Preparation

It is prepared by reacting lead(II) hydroxide with orthophosphoric acid.

3Pb(OH)₂ + 2H₃PO₄ → Pb₃(PO₄)₂ + 6H₂O

References

^ "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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[1] "Lead phosphate". pubchem.ncbi.nlm.nih.gov. Retrieved 27 April 2023.

[2] "Lead(II) phosphate". The Chemical Thesaurus. Retrieved 11 October 2010.

[3] Wright, John, (2003). Environmental Chemistry pg 211. New York (NY): Routledge.

[4] 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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