Oxalate 716222 221938220 2008-06-26T19:47:16Z JingaJenga 2946184 info about Oxalobacter formigenes [[Image:Oxalate-ion-2D-skeletal.png|thumb|right|The structure of the oxalate anion]] 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 [[Wood Sorrel|Sorrel]] may result in [[kidney disease]] or even [[death]] due to [[oxalate poisoning]]. The presence of ''[[Oxalobacter formigenes]]'' in the [[gut flora]] can prevent this. 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/> {{organic-compound-stub}} {{Antithrombotics}} [[Category:Oxalates]] [[Category:Carboxylate anions]] [[bg:Оксалат]] [[de:Oxalate]] [[nl:Oxalaat (zout)]] [[pl:Szczawiany]] [[ru:Оксалаты]] [[th:ออกซาเลต]] [[zh:草酸盐]]