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Copper(II) citrate

{{Cite web |title=Cupric citrate |url=https://pubchem.ncbi.nlm.nih.gov/compound/Cupric-citrate |publisher=PubChem |access-date=2025-11-17}} \n| CASNo5 = 6020-30-0\n| ChemSpiderI...

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Copper(II) citrate is the copper(II) salt of citric acid that occurs in several hydration states. Commercial material is commonly a blue-green solid and is used as a source of copper in industrial, agricultural and some supplement applications.[1][2]

Properties

The anhydrous powder is blue while the hydrate is a light green.[2]

Preparation

Copper(II) citrate can be prepared by reacting a soluble copper(II) salt such as copper(II) sulfate with trisodium citrate or tripotassium citrate; different hydrate stoichiometries may be isolated depending on conditions.[4]

Uses

Copper(II) citrate is used as a copper source in some agricultural micronutrient formulations and in proprietary supplement formulations. It is also used as a reagent and copper source in industrial and research contexts.[5][6]

References

  1. 123"Cupric citrate". PubChem. Retrieved 2025-11-17.
  2. 12345"Copper(II) Citrate 2.5-Water product data". FUJIFILM Wako. Retrieved 2025-11-17.
  3. ↑"Copper citrate - supplier data and solubility notes". Lohmann Minerals. Retrieved 2025-11-17.
  4. ↑"Cupric citrate — product information". Sigma-Aldrich / Merck. Retrieved 2025-11-17.
  5. ↑"Copper fungicides for organic and conventional disease management in vegetables". Cornell University. Retrieved 2025-11-17.
  6. ↑"Copper supplements: product example". Pure Encapsulations (product page). Retrieved 2025-11-17.