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Copper Oxalate
Names
IUPAC name
Copper(2+) oxalate [1]
Systematic IUPAC name
Copper(2+) oxalate [2]
Other names
copper oxalate; copper(2+) ethanedioate; ethanedioic acid, copper(2+) salt (1:1); Ethanedioic acid, Cupric Salt; Oxalic acid copper (2+) salt (1:1); Oxalic acid, copper (2+) salt (1:1) [1][2]
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 212-411-4
UNII
  • InChI=1S/C2H2O4.Cu/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2 [2]
  • [Cu+2].[O-]C(=O)C([O-])=O [2]
Properties
C2CuO4 [2]
Molar mass 151.565 g/mol [1]
Appearance Blue-white powder, bluish-green powder [1]
Melting point None [3]
Boiling point 365.1 °C [3]
Vapor pressure 2.51E-06 mmHg [1]
Hazards
Flash point Not flammable [4]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Copper oxalate is a chemical compound. It is has many different uses such as catalyzing organic reactions and stabilizing acetylated polyformaldehyde. Copper oxalate is also fond in seed treatments used to keep away birds and rodents. [5]

Properties

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Copper oxalate is usually a blue powder. It is practically insoluble in water, alcohol, ether and acetic acid. It is soluble in ammonium hydroxide. It loses any hydrated water by 200° C. Copper oxalate decomposes in air at 310° C into cupric oxide. It is insoluble in acetone. [5]

Occurrences

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A hydrated form of copper oxalate has been found in nature. Moolooite is a rare mineral made of hydrated copper oxalate found in Mooloo Downs station, Western Australia. The oxalate that forms it is thought to come from bird guano.[6] Another occurrence of moolooite has been reported from a silver mining district in France.[7] Copper oxalate has also been found in lichens growing on copper-sulfide rocks.[8]

Production

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Copper oxalate is prepared by precipitation from a mixture of a copper(II) salt and sodium oxalate solution. [5]

Hazards

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Copper oxalate dust may cause severe irritation of eyes. It may cause moderate to severe irritation of the skin. [4]

References

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  1. ^ a b c d e "Copper oxalate - Compound Summary". PubChem.
  2. ^ a b c d e "copper oxalate". ChemSpider. Retrieved 19 October 2012.
  3. ^ a b "MSDS Sheet" (PDF). Retrieved 19 October 2012.
  4. ^ a b "Copper Oxalate" (PDF). Retrieved 19-October-2012. {{cite web}}: Check date values in: |accessdate= (help)
  5. ^ a b c "Copper (II) Oxalate". http://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+265. {{cite web}}: External link in |publisher= (help); Missing or empty |url= (help)
  6. ^ "Moolooite in Lichens" (PDF). Retrieved 19 October 2012.
  7. ^ "Moolooite". Retrieved 19 October 2012.
  8. ^ "The Occurrence of Copper Oxalate in Lichens Growing on Copper Sulphide-Bearing Rocks In Scandinavia". Retrieved 19 October 2012.