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Copper Oxalate
	copper oxalate copper oxalate ;
Names
	IUPAC name Copper(2+) oxalate
	Systematic IUPAC name Copper(2+) oxalate
	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)
Identifiers
CAS Number	814-91-5;
3D model (JSmol)	Interactive image;
ChemSpider	12596;
EC Number	212-411-4;
PubChem CID	13148;
UNII	BN136S94FS ;
	InChI InChI=1S/C2H2O4.Cu/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2 ;
	SMILES [Cu+2].[O-]C(=O)C([O-])=O ;
Properties
Chemical formula	C2CuO4
Molar mass	151.565 g/mol
Appearance	Blue-white powder, bluish-green powder
Melting point	None
Boiling point	365.1 °C
Vapor pressure	2.51E-06 mmHg
Hazards
Flash point	Not flammable
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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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

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

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

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

Hazards

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

References

^ ^a ^b ^c ^d ^e "Copper oxalate - Compound Summary". PubChem.
^ ^a ^b ^c ^d ^e "copper oxalate". ChemSpider. Retrieved 19 October 2012.
^ ^a ^b "MSDS Sheet" (PDF). Retrieved 19 October 2012.
^ ^a ^b "Copper Oxalate" (PDF). Retrieved 19-October-2012. {{cite web}}: Check date values in: |accessdate= (help)
^ ^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)
^ "Moolooite in Lichens" (PDF). Retrieved 19 October 2012.
^ "Moolooite". Retrieved 19 October 2012.
^ "The Occurrence of Copper Oxalate in Lichens Growing on Copper Sulphide-Bearing Rocks In Scandinavia". Retrieved 19 October 2012.

[Source_1-1] "Copper oxalate - Compound Summary". PubChem.

[Source-2] "copper oxalate". ChemSpider. Retrieved 19 October 2012.

[Source_4-3] "MSDS Sheet" (PDF). Retrieved 19 October 2012.

[Source_3-4] "Copper Oxalate" (PDF). Retrieved 19-October-2012. {{cite web}}: Check date values in: |accessdate= (help)

[Source_5-5] "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)

[Source_8-6] "Moolooite in Lichens" (PDF). Retrieved 19 October 2012.

[Source_6-7] "Moolooite". Retrieved 19 October 2012.

[Source_7-8] "The Occurrence of Copper Oxalate in Lichens Growing on Copper Sulphide-Bearing Rocks In Scandinavia". Retrieved 19 October 2012.

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