Oxalate
Oxalate , is the dianion with formula C2O42− also written 22−. Either name is often used for derivatives, such as disodium oxalate, 2C2O42−, or an ester of oxalic acid Oxalate (IUPAC: ethanedioate), is the dianion with formula C2O42− also written (COO)22−. Either name is often used for derivatives, such as disodium oxalate, (Na+)2C2O42−, or an ester of oxalic acid Oxalate (IUPAC: ethanedioate), is the dianion with formula C2O42− also written (COO)22−. Either name is often used for derivatives, such as disodium oxalate, (Na+)2C2O42−, or an ester of oxalic acid (such as dimethyl oxalate, (CH3)2C2O4