Zinc pyrophosphate

Zinc pyrophosphate^[1]

Names
Other names Dizinc diphosphate
Identifiers
CAS Number	7446-26-6
ChemSpider	56393
Jmol interactive 3D	Image
PubChem	62641
InChI InChI=1S/H4O7P2.2Zn/c1-8(2,3)7-9(4,5)6;;/h(H2,1,2,3)(H2,4,5,6);;/q;2*+2/p-4 Key: OMSYGYSPFZQFFP-UHFFFAOYSA-J InChI=1/H4O7P2.2Zn/c1-8(2,3)7-9(4,5)6;;/h(H2,1,2,3)(H2,4,5,6);;/q;2*+2/p-4 Key: OMSYGYSPFZQFFP-XBHQNQODAA
SMILES [Zn+2].[Zn+2].[O-]P([O-])(=O)OP([O-])([O-])=O
Properties
Chemical formula	Zn2P2O7
Molar mass	304.72 g/mol
Appearance	White crystalline powder
Density	3.75 g/cm^3
Solubility in water	Insoluble
Solubility	Soluble in dilute acids
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

Zinc pyrophospate (Zn₂P₂O₇) is an ionic inorganic chemical compound composed of Zn²⁺ cations and pyrophosphate anions. It is useful in gravimetric analysis of zinc. Zinc pyrophosphate is obtained by precipitating zinc as a phosphate, then heating over 1123 K.

References

1. Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–96, ISBN 0-8493-0594-2