Iron(III) phosphate

Iron(III) phosphate
Names
IUPAC name
Iron(III) phosphate
Other names
Ferric orthophosphate, Ferric phosphate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.030.123 Edit this at Wikidata
UNII
  • InChI=1S/Fe.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+3;/p-3 checkY
    Key: WBJZTOZJJYAKHQ-UHFFFAOYSA-K checkY
  • [O-]P(=O)([O-])[O-].[Fe+3]
Properties
FePO4
Molar mass 150.815 g/mol (anhydrous)
Appearance yellow-brown solid
Density 3.056 g/cm3 (anhydrous)
2.87 g/cm3 (20 °C, dihydrate)
Melting point 250 °C (482 °F; 523 K)
(dihydrate) decomposes[1]
anhydrous:
insoluble
dihydrate:
0.642 g/100 mL (100 °C)[1]
9.91×10−16[2]
+11,500.0·10−6 cm3/mol
Thermochemistry
180.5 J/mol·K (dihydrate)[1]
171.3 J/mol·K (dihydrate)[1]
-1888 kJ/mol (dihydrate)[1]
Hazards
GHS labelling:
GHS07: Exclamation mark[3]
Warning
H315, H319, H335[3]
P261, P305+P351+P338[3]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Iron(III) phosphate, also ferric phosphate,[4][5] is the inorganic compound with the formula FePO4. Four polymorphs of anhydrous FePO4 are known. Additionally two polymorphs of the dihydrate FePO4·(H2O)2 are known. These materials have attracted much interest as potential cathode materials in batteries.

  1. ^ a b c d e "iron(III) phosphate dihydrate". chemister.ru. Retrieved 3 July 2014.
  2. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 978-1138561632.
  3. ^ a b c Sigma-Aldrich Co., Iron(III) phosphate dihydrate. Retrieved on 2014-05-03.
  4. ^ "Iron(III) Phosphate". NIH, U.S. National Library of Medicine. Retrieved 22 January 2016.
  5. ^ "FERRIC PHOSPHATE". EndMemo.com. Retrieved 22 January 2016.