Ammonium oxalate
Names
IUPAC name
Ammonium oxalate
Systematic IUPAC name
Ammonium ethanedioate
Other names
Diammonium oxalate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.012.912 Edit this at Wikidata
UNII
  • InChI=1S/C2H2O4.2H3N/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H3 checkY
    Key: VBIXEXWLHSRNKB-UHFFFAOYSA-N checkY
  • InChI=1S/C2H2O4.2H3N/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H3
  • [O-]C(=O)C([O-])=O.[NH4+].[NH4+]
Properties
[NH4]2C2O4
Molar mass 124.096 g·mol−1
Appearance Colorless or white crystalline solid
Density 1.5 g/cm3[1]
Melting point 70 C (158 F, 343.15 K)
5.20 g/(100 ml) (25 °C)[1]
Hazards
GHS labelling:
H302, H312, H319
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium oxalate is a chemical compound with the chemical formula [NH4]2C2O4. Its formula is often written as (NH4)2C2O4 or (COONH4)2. It is an ammonium salt of oxalic acid. It consists of ammonium cations ([NH4]+) and oxalate anions (C2O2−4). The structure of ammonium oxalate is ([NH4]+)2[C2O4]2−. Ammonium oxalate sometimes comes as a monohydrate ([NH4]2C2O4·H2O). It is a colorless or white salt under standard conditions and is odorless and non-volatile. It occurs in many plants and vegetables.

Vertebrate

It is produced in the body of vertebrates by metabolism of glyoxylic acid or ascorbic acid. It is not metabolized but excreted in the urine.[2] It is a constituent of some types of kidney stone.[3][4] It is also found in guano.

Mineralogy

Oxammite is a natural mineral form of ammonium oxalate. This mineral is extremely rare. It is an organic mineral derived from guano.[5]

Chemistry

Ammonium oxalate is used as an analytical reagent and general reducing agent.[2] It and other oxalates are used as anticoagulants, to preserve blood outside the body.[citation needed]

Earth sciences

Acid ammonium oxalate (ammonium oxalate acidified to pH 3 with oxalic acid) is commonly employed in soil chemical analysis to extract iron and aluminium from poorly-crystalline minerals (such as ferrihydrite), iron(II)-bearing minerals (such as magnetite) and organic matter.[6][page needed]

References

  1. ^ a b John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99th ed.). CRC Press. pp. 4–41. ISBN 978-1138561632.
  2. ^ a b National Center for Biotechnology Information. PubChem Compound Database; CID 14213 (accessed 15 November 2016).
  3. ^ The International Pharmacopoeia, p.1292, Volume 1, World Health Organization, 2006 ISBN 92-4-156301-X.
  4. ^ N G Coley, "The collateral sciences in the work of Golding Bird (1814-1854)", Medical History, iss.4, vol.13, October 1969, pp.372.
  5. ^ "Home". mindat.org.
  6. ^ Rayment, George; Lyons, David (2011). Soil Chemical Methods - Australasia. CSIRO Publishing. ISBN 9780643101364.
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