Copper oxalate

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Copper oxalate
Copper (II) Oxalate Structural Formula V1.svg
Names
Other names
Copper (II) oxalate, cupric oxalate, copper(2+) ethanedioate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.011.283 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 212-411-4
PubChem CID
UNII
UN number 3077
  • Key: QYCVHILLJSYYBD-UHFFFAOYSA-N
  • InChI=1S/C2H2O4.Cu/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2
  • O=C([O-])C([O-])=O.[Cu+2]
Properties
CuC
2O
4
Molar mass 151.56
Appearanceblue-white solid (as a hemihydrate)
Melting point 310 °C (590 °F; 583 K)
insoluble
4.43×10−10 [1]
Hazards
GHS labelling:
GHS-pictogram-exclam.svg [2]
Warning
H302, H302+H312, H312
P264, P270, P280, P301+P312, P302+P352, P312, P322, P330, P363, P501
Related compounds
Related compounds
 Calcium oxalate
Sodium oxalate
Magnesium oxalate
Strontium oxalate
Barium oxalate
Iron(II) oxalate
Iron(III) oxalate
Lithium oxalate
Praseodymium oxalate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Kupfer(II)-oxalat.jpg

Copper oxalate is an inorganic compound, a salt of copper metal and oxalic acid with the chemical formula CuC
2O
4. [3] The compound is practically insoluble in water, alcohol, ether, and acetic acid but soluble in ammonium hydroxide. [4] Copper oxalate forms a hydrate, which forms acid-blue crystals.

Contents

Synthesis

Copper oxalate can be produced by precipitation from a mixture of a copper (II) salt and a sodium oxalate solution or by reacting copper sulfate with oxalic acid. [5]

Properties

As a hemihydrate, copper oxalate is a blue-white solid that is practically insoluble in water. At 200 °C, it loses its water of crystallization.

The compound also forms complex salts with alkali metal oxalates and ammonium oxalate:

Uses

Copper oxalate is used as a catalyst for organic reactions, as a stabilizer for acetylated polyformaldehyde [6] and in seed treatment (to repel birds and rodents).[ citation needed ]

See also

Related Research Articles

<span class="mw-page-title-main">Oxalic acid</span> Simplest dicarboxylic acid

Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula HO−C(=O)−C(=O)−OH, also written as (COOH)2 or (CO2H)2 or H2C2O4. It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water. Its name comes from the fact that early investigators isolated oxalic acid from flowering plants of the genus Oxalis, commonly known as wood-sorrels. It occurs naturally in many foods. Excessive ingestion of oxalic acid or prolonged skin contact can be dangerous.

<span class="mw-page-title-main">Copper phthalocyanine</span> Synthetic blue pigment from the group of phthalocyanine dyes

Copper phthalocyanine (CuPc), also called phthalocyanine blue, phthalo blue and many other names, is a bright, crystalline, synthetic blue pigment from the group of phthalocyanine dyes. Its brilliant blue is frequently used in paints and dyes. It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalis and acids. It has the appearance of a blue powder, insoluble in most solvents including water.

Classical qualitative inorganic analysis is a method of analytical chemistry which seeks to find the elemental composition of inorganic compounds. It is mainly focused on detecting ions in an aqueous solution, therefore materials in other forms may need to be brought to this state before using standard methods. The solution is then treated with various reagents to test for reactions characteristic of certain ions, which may cause color change, precipitation and other visible changes.

A solubility chart is a chart describing whether the ionic compounds formed from different combinations of cations and anions dissolve in or precipitate from solution.

<span class="mw-page-title-main">Americium dioxide</span> Chemical compound

Americium dioxide (AmO2) is a black compound of americium. In the solid state AmO2 adopts the fluorite, CaF2 structure. It is used as a source of alpha particles.

<span class="mw-page-title-main">Dimethyl oxalate</span> Chemical compound

Dimethyl oxalate is an organic compound with the formula (CO2CH3)2 or (CH3)2C2O4. It is the dimethyl ester of oxalic acid. Dimethyl oxalate is a colorless or white solid that is soluble in water.

<span class="mw-page-title-main">Beryllium oxalate</span> Chemical compound

Beryllium oxalate is an inorganic compound, a salt of beryllium metal and oxalic acid with the chemical formula C
2BeO
4. It forms colorless crystals, dissolves in water, and also forms crystalline hydrates. The compound is used to prepare ultra-pure beryllium oxide by thermal decomposition.

<span class="mw-page-title-main">Lithium oxalate</span> Chemical compound

Lithium oxalate is an inorganic compound, a salt of lithium metal and oxalic acid with the chemical formula C
2Li
2O
4. Lithium oxalate is soluble in water and converts to the oxide when heated.

Praseodymium(III) oxalate is an inorganic compound, a salt of praseodymium metal and oxalic acid with the chemical formula C6O12Pr2. The compound forms light green crystals, insoluble in water, also forms crystalline hydrates.

Praseodymium(III) nitride is a binary inorganic compound of praseodymium and nitrogen. Its chemical formula is PrN. The compound forms black crystals, and reacts with water.

<span class="mw-page-title-main">Yttrium oxalate</span> Chemical compound

Yttrium oxalate is an inorganic compound, a salt of yttrium and oxalic acid with the chemical formula Y2(C2O4)3. The compound does not dissolve in water and forms crystalline hydrates—colorless crystals.

Manganese oxalate is a chemical compound, a salt of manganese and oxalic acid with the chemical formula MnC
2O
4. The compound creates light pink crystals, does not dissolve in water, and forms crystalline hydrates. It occurs naturally as the mineral Lindbergite.

<span class="mw-page-title-main">Tin(II) oxalate</span> Chemical compound

Tin(II) oxalate is an inorganic compound, a salt of tin and oxalic acid with the chemical formula SnC
2O
4. The compound looks like colorless crystals, does not dissolve in water, and forms crystalline hydrates.

Neptunium (IV) oxalate is an inorganic compound, a salt of neptunium and oxalic acid with the chemical formula Np(C2O4)2. The compound is slightly soluble in water, forms crystalline hydrates—green crystals.

Samarium(III) oxalate is an inorganic compound, a salt of samarium and oxalic acid with the formula Sm2(C2O4)3. The compound does not dissolve in water, forms a crystalline hydrate with yellow crystals.

<span class="mw-page-title-main">Actinium(III) nitrate</span> Chemical compound

Actinium(III) nitrate is an inorganic compound, actinium salt of nitric acid with the chemical formula Ac(NO3)3. The compound looks like white substance, readily soluble in water.

Lutetium(III) nitrate is an inorganic compound, a salt of lutetium and nitric acid with the chemical formula Lu(NO3)3. The compound forms colorless crystals, dissolves in water, and also forms crystalline hydrates. The compound is poisonous.

<span class="mw-page-title-main">Erbium(III) nitrate</span> Chemical compound

Erbium(III) nitrate is an inorganic compound, a salt of erbium and nitric acid with the chemical formula Er(NO3)3. The compound forms pink crystals, readily soluble in water, also forms crystalline hydrates.

Polonium tetranitrate is an inorganic compound, a salt of polonium and nitric acid with the chemical formula Po(NO3)4. The compound is radioactive, forms white crystals.

<span class="mw-page-title-main">Copper(II) stearate</span> Chemical compound

Copper(II) stearate is a metal-organic compound, a salt of copper and stearic acid with the formula Cu(C17H35COO)2. The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid.

References

  1. ↑ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN   978-1138561632.
  2. ↑ "Copper oxalate - Substance Information - ECHA". European Chemical Agency . Retrieved 17 June 2021.
  3. ↑ Royappa, A. Timothy; Royappa, Andrew D.; Moral, Raphael F.; Rheingold, Arnold L.; Papoular, Robert J.; Blum, Deke M.; Duong, Tien Q.; Stepherson, Jacob R.; Vu, Oliver D.; Chen, Banghao; Suchomel, Matthew R.; Golen, James A.; André, Gilles; Kourkoumelis, Nikolaos; Mercer, Andrew D.; Pekarek, Allegra M.; Kelly, Dylan C. (November 2016). "Copper(I) oxalate complexes: Synthesis, structures and surprises". Polyhedron. 119: 563–574. doi: 10.1016/j.poly.2016.09.043 .
  4. ↑ "Hazardous Substances Data Bank (HSDB) : 265". National Library of Medicine . Retrieved 17 June 2021.
  5. ↑ Gooch, Frank Austin (1909). The precipitation of copper oxalate in analysis. p. 448. OCLC   890741677.
  6. ↑ Richardson, H. Wayne (1997). Handbook of Copper Compounds and Applications. CRC Press. p. 84. ISBN   978-0-8247-8998-5.
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