Oxalate
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Oxalate is an anion with the chemical formula C2O2−4. This dianion is colorless. It occurs naturally, including in some foods. It forms a variety of salts, for example sodium oxalate, and several este
Scanning electron micrograph of the surface of a kidney stone showing tetragonal crystals of weddellite (calcium oxalate dihydrate) emerging from the amorphous central part of the stone; the horizontal length of the picture represents 0.5 mm of the figured original.
Oxalic acid
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Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula HO−C−C−OH, also written as 2 or 2 or H2C2O4. It is the simplest dicarboxylic acid. It is a white crystalli
Oxalate
…It forms a variety of salts, for example sodium oxalate (Na2C2O4), and several esters such as dimethyl oxalate ((CH3)2C2O4). It is a conjugate base of oxalic acid. At neutral pH in aqueous solution, oxalic acid converts completely to oxalate. The dissociation of protons from oxalic acid proceeds in a determined…
Oxalic acid dihydrate
Stems of Oxalis triangularis contain oxalic acid.