Iron(II) phosphate

Iron(II) phosphate
Names
	IUPAC name Iron(II) phosphate
	Other names Ferrous phosphate
Identifiers
CAS Number	14940-41-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	8039263 ;
ECHA InfoCard	100.035.456
EC Number	239-018-0;
PubChem CID	9863567;
UNII	D07L04MRWI ;
CompTox Dashboard (EPA)	DTXSID20872569 ;
	InChI InChI=1S/3Fe.2H3O4P/c;;;21-5(2,3)4/h;;;2(H3,1,2,3,4)/q3*+2;;/p-6 Key: SDEKDNPYZOERBP-UHFFFAOYSA-H ;
	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
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).

Iron(II) phosphate, also ferrous phosphate,^[2] 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.

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

Media related to Iron(II) phosphate at Wikimedia Commons

Names


IUPAC name Iron(II) phosphate
Other names Ferrous phosphate
Identifiers
CAS Number	14940-41-1
3D model (JSmol)	Interactive image
ChemSpider	8039263
ECHA InfoCard	100.035.456
EC Number	239-018-0
PubChem CID	9863567
UNII	D07L04MRWI
CompTox Dashboard (EPA)	DTXSID20872569
InChI InChI=1S/3Fe.2H3O4P/c;;;21-5(2,3)4/h;;;2(H3,1,2,3,4)/q3*+2;;/p-6 Key: SDEKDNPYZOERBP-UHFFFAOYSA-H
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°
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).