Barium metaphosphate

Not to be confused with barium phosphate.
Barium metaphosphate
Names
IUPAC name
barium(2+); dioxido(oxo)phosphanium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.951
EC Number
  • 237-362-6
  • InChI=1S/Ba.2HO3P/c;2*1-4(2)3/h;2*(H,1,2,3)/q+2;;/p-2
    Key: XNJIKBGDNBEQME-UHFFFAOYSA-L
  • [O-][P+](=O)[O-].[O-][P+](=O)[O-].[Ba+2]
Properties
Ba(PO3)2
Molar mass 295.27 g/mol
Appearance Powder
Density 3.63 g/cm3
Melting point 1,560 °C (2,840 °F; 1,830 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Barium metaphosphate is an inorganic substance with the molecular formula Ba(PO3)2. It is a colourless solid that is insoluble in water, though is soluble in acidic solutions through "slow dissolution". X-ray crystallography shows that this material is composed of Ba2+ cations attached to a polyphosphate ((PO3−)n) anion. A number of hydrated forms are known which are actually cyclic metaphosphates, Ba2(P4O12)·3.5H2O, Ba3(P3O9)2·6H2O.

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