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Copper(II) oxalate

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Identification
Molecular formula
CuC2O4
CAS number
5893-66-3
IUPAC name
copper;oxalate
State
State

At room temperature, copper(II) oxalate is a solid. It is stable in its solid state and does not easily dissolve in water, though it is more soluble in acidic solutions.

Melting point (Celsius)
200.00
Melting point (Kelvin)
473.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
179.60g/mol
Molar mass
179.6040g/mol
Density
2.7000g/cm3
Appearence

Copper(II) oxalate appears as a bluish-green or white solid, primarily depending on the degree of hydration and purity of the sample. It forms as a powder or crystalline solid and is typically odorless.

Comment on solubility

Solubility of Copper Oxalate

Copper oxalate, with the chemical formula CuC₂O₄, exhibits intriguing solubility characteristics that can greatly affect its behavior in various environments. Here's what you need to know:

  • The solubility of copper oxalate in water is generally low, making it largely insoluble. This low solubility is due to the strong ionic bonds between copper ions and oxalate ions.
  • It is more soluble in acidic solutions compared to neutral or basic conditions, as protons from acids can help dissolve the compound by converting it to soluble copper ions.
  • In contrast, alkaline solutions can further decrease its solubility, leading to precipitation.
  • Copper oxalate can also form complex ions, such as with the formation of copper(II) citrate or other ligands, which can enhance its solubility in certain chemical environments.

In practical applications, understanding these solubility trends is crucial since they dictate the behavior of copper oxalate in soil chemistry, wastewater treatment, and even in biological systems.

As a note: "The solubility of a compound is a fundamental property that influences its applications in various fields!"

Interesting facts

Interesting Facts About Copper Oxalate

Copper oxalate is a fascinating compound that exemplifies the rich interactions between metals and organic compounds. Here are some intriguing aspects of this compound:

  • Formation: Copper oxalate is produced through the reaction of copper salts with oxalic acid, demonstrating the beautiful chemistry of organic and inorganic species.
  • Complexation: The compound highlights the concept of complexation in coordination chemistry, where copper ions can coordinate with oxalate ligands, forming stable complexes.
  • Occurrence: It can be found naturally in some mineral deposits, showcasing how metals interact with organic molecules in geological settings.
  • Analytical Chemistry: Copper oxalate plays a role in various analytical techniques. It is often used in the quantitative analysis of copper in different samples, allowing scientists to gauge the concentration of this essential metal.
  • Biological Importance: While copper is a necessary trace element for living organisms, excess accumulation in the form of compounds like copper oxalate can lead to toxicity, making it an important area of study in environmental and health sciences.
  • Historical Use: The application of copper oxalate can be traced back to ancient cultures, where it was used in pigments and dyes, illustrating the compound's enduring relevance through history.

You may find it enlightening to note that—as with many metal-organic compounds—the behavior of copper oxalate can be influenced by its environment, including pH levels and the presence of other ions. Overall, copper oxalate serves as a prime example of the versatile relationships between elements and compounds in chemistry.

Synonyms
CUPRIC OXALATE
Copper oxalate
814-91-5
Copper(II) oxalate
Oxalic acid copper(2+) salt (1:1)
Caswell No. 248A
Cupric oxalate (1:1)
HSDB 265
EINECS 212-411-4
UNII-BN136S94FS
NSC 86015
EPA Pesticide Chemical Code 023305
NSC 112246
Ethanedioic acid, copper(2+) salt (1:1)
Ethanedioic acid, copper(2++) salt (1:1)
CUPRIC OXALATE [MI]
COPPER(2+) OXALATE
Oxalic acid, copper(2+) salt (1:1)
DTXSID0041802
NSC-86015
NSC-112246
COPPER(2+) OXALATE (1:1)
(ETHANEDIOATO(2-)-.KAPPA.O1,.KAPPA.O2)COPPER
55671-32-4(hemihydrate)5893-66-3(replacedby55671-32-4)814-91-5
CASWELL NO 248A
DTXCID8021802
(ETHANEDIOATO(2-)-KAPPAO1,KAPPAO2)COPPER
Copperoxalate
5893-66-3
copper;oxalate
Copper oxalate (CuC2O4)
Ethanedioic acid copper salt
Copper(II) oxalate hemihydrate
BN136S94FS
copper(2+) oxalate ion
Copper, (ethanedioato(2-)-kappaO1,kappaO2)-
SCHEMBL119833
HY-W140731
CS-0199246
NS00079753
Q4332771
55671-32-4(hemihydrate); 5893-66-3(replacedby55671