View source for Oxalate

[[Image:Oxalate-ion-2D-skeletal.png|thumb|right|The structure of the oxalate anion]]
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==Overview==
An '''oxalate''' (also '''ethanedioate''') is a [[salt]] or [[ester]] of [[oxalic acid]]. As a salt, the oxalate anion has the chemical formula C<sub>2</sub>O<sub>4</sub><sup>2−</sup> or (COO)<sub>2</sub><sup>2−</sup>.

Consumption of oxalates (for example, the grazing of animals on oxalate-containing plants such as greasewood), or human consumption of Sorrel may result in [[kidney disease]] or even [[death]] due to oxalate poisoning.

The charge on oxalate allows it to act as a [[chelator]] of various positively charged metal ions.

Much of its other properties resemble oxalic acid.

==Examples==
* [[sodium oxalate]] - Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub>
* [[calcium oxalate]] - CaC<sub>2</sub>O<sub>4</sub>, a major component of [[kidney stones]]
* [[dimethyl oxalate]] - (CH<sub>3</sub>)<sub>2</sub>C<sub>2</sub>O<sub>4</sub>
* [[phenyl oxalate ester]] - (C<sub>6</sub>H<sub>5</sub>)<sub>2</sub>C<sub>2</sub>O<sub>4</sub>
* [[potassium ferrioxalate]] - [K<sub>3</sub>[Fe(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>], an iron complex with oxalate ligands
* ammonium oxalate - (NH<sub>4</sub>)<sub>2</sub>C<sub>2</sub>O<sub>4</sub>

==References==
<references/>

[[Category:Oxalates]]
[[Category:Carboxylate anions]]
[[Category:Nephrology]]

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