Iron(II) phosphate

Iron(II) phosphate

Names
IUPAC name Iron(II) phosphate
Other names Ferrous phosphate
Identifiers
CAS Number	14940-41-1  Y
3D model (JSmol)	Interactive image
ChemSpider	8039263  Y
ECHA InfoCard	100.035.456
EC Number	239-018-0
PubChem CID	9863567
UNII	D07L04MRWI  Y
CompTox Dashboard (EPA)	DTXSID20872569
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	Fe3(PO4)2
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°
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P280, P304+P340, P305+P351+P338, P405, P501
NFPA 704 (fire diamond)	[2] 2 1 0
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, ^[3] Fe₃(PO₄)₂, is an iron salt of phosphoric acid.

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

1. "iron(II) phosphate octahydrate". chemister.ru. Retrieved 2 July 2014.
2. "Safety Data Sheet". fishersci.com. Retrieved 12 August 2023.
3. "Iron(II) Phosphate". EndMemo.com. Archived from the original on 24 January 2016. Retrieved 22 January 2016.

External links

Media related to Iron(II) phosphate at Wikimedia Commons