Iron(II) phosphate

Iron(II) phosphate

Names
IUPAC name Iron(II) phosphate
Other names Ferrous phosphate
Identifiers
CAS Number	14940-41-1
3D model (Jmol)	Interactive image
ChemSpider	8039263 Y
ECHA InfoCard	100.035.456
PubChem	9863567
InChI InChI=1S/3Fe.2H3O4P/c;;;2*1-5(2,3)4/h;;;2*(H3,1,2,3,4)/q3*+2;;/p-6 Y Key: SDEKDNPYZOERBP-UHFFFAOYSA-H Y
SMILES [O-]P(=O)([O-])[O-].[O-]P(=O)([O-])[O-].[Fe+2].[Fe+2].[Fe+2]
Properties
Chemical formula	Fe3O8P2
Molar mass	357.47 g·mol−1
Appearance	brown powder
Density	2.61 g/cm3 (octahydrate)
Melting point	180 °C (356 °F; 453 K) (octahydrate) decomposes[1]
Solubility in water	insoluble
Structure
Crystal structure	monoclinic (octahydrate)
Space group	C 2/m
Lattice constant	a = 10.086 (octahydrate), b = 13.441 (octahydrate), c = 4.703 (octahydrate) α = 90°, β = 104.27°, γ = 90°
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Iron(II) phosphate, also ferrous phosphate,^[2] Fe₃(PO₄)₂, is an iron salt of phosphoric acid. It is used in garden chemicals such as moss killers and slug pellets.

Natural occurrences

The mineral vivianite is a naturally occurring form of hydrated iron(II) phosphate.

Production

It can be formed by the reaction of ferrous hydroxide with phosphoric acid to produce hydrated iron(II) phosphate.

See also

• Iron(III) phosphate

References

External links

Media related to Iron(II) phosphate at Wikimedia Commons