Sodium hydrogenoxalate

Sodium hydrogenoxalate
Names
	Preferred IUPAC name Sodium 2-hydroxy-2-oxoacetate
	Other names Ethanedioate, hydrogen sodium salt (1:1:1); Ethanedioic acid, sodium salt (1:1); Monosodium oxalate; Sodium hydrogen ethanedioate (1:1:1); Oxalic acid sodium salt; Oxalic acid, sodium salt; Sodium acid oxalate; Sodium and hydrogen and oxalate; Sodium bioxalate;
Identifiers
CAS Number	1186-49-8;
3D model (JSmol)	Interactive image;
ChemSpider	4953678;
ECHA InfoCard	100.013.356
EC Number	214-691-3;
PubChem CID	23684893;
UNII	2T9TH558WS;
CompTox Dashboard (EPA)	DTXSID1047499 ;
	InChI InChI=1S/C2H2O4.Na/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+1/p-1 Key: UJRAXLUXHBUNDO-UHFFFAOYSA-M;
	SMILES [Na+].[O-]C(=O)C(=O)O;
Properties
Chemical formula	NaHC2O4
Molar mass	112.0167 g/mol
Appearance	Colorless crystalline solid
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H312
Precautionary statements	P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Related compounds
Other anions	Sodium bicarbonate (oxalate replaced with carbonate)
Other cations	Potassium hydrogenoxalate (potassium instead of sodium); Oxalic acid (hydrogen instead of sodium); Sodium oxalate (sodium instead of hydrogen);
Related compounds	Hydrogenoxalate (sodium ion removed); Oxalate (sodium and hydrogen ions removed);
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Sodium hydrogenoxalate or sodium hydrogen oxalate is a chemical compound with the chemical formula NaHC₂O₄. It is an ionic compound. It is a sodium salt of oxalic acid H₂C₂O₄. It is an acidic salt, because it consists of sodium cations Na⁺ and hydrogen oxalate anions HC₂O−4 or HO−C(=O)−CO−2, in which only one acidic hydrogen atom in oxalic acid is replaced by sodium atom. The hydrogen oxalate anion can be described as the result of removing one hydrogen ion H⁺ from oxalic acid, or adding one to the oxalate anion C₂O2−4.