|Systematic IUPAC name
iron(3+) ethanedioate (2:3)
|Jmol 3D model||Interactive image|
|Molar mass||375.747 g/mol|
|Appearance||Pale yellow solid (anhydrous)
Lime green solid (hexahydrate)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Ferric oxalate, also known as iron(III) oxalate, is a chemical compound composed of ferric ions and oxalate ligands; it may also be regarded as the ferric salt of oxalic acid. The anhydrous material is pale yellow; however, it may be hydrated to form Fe2(C2O4)3·6H2O which is bright green in colour
Like many oxalates, ferric oxalate has been investigated as a short term treatment for dentin hypersensitivity. It is used in certain toothpaste formulations; however, its effectiveness has been questioned.
It is used as the light-sensitive element in the Kallitype photographic printing process.
A number of other iron oxalates are known:-
- Gillam, D. G.; Newman, H. N.; Davies, E. H.; Bulman, J. S.; Troullos, E. S.; Curro, F. A. "Clinical evaluation of ferric oxalate in relieving dentine hypersensitivity". Journal of Oral Rehabilitation 31 (3): 245–250. doi:10.1046/j.0305-182X.2003.01230.x.
- Cunha-Cruz, J.; Stout, J. R.; Heaton, L. J.; Wataha, J. C. (29 December 2010). "Dentin Hypersensitivity and Oxalates: a Systematic Review". Journal of Dental Research 90 (3): 304–310. doi:10.1177/0022034510389179.
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