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Copper(II) phosphate

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Title: Copper(II) phosphate  
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Subject: Phosphates
Collection: Copper Compounds, Phosphates
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Copper(II) phosphate

Copper(II) phosphate
CAS number  YesY
ChemSpider  YesY
Jmol-3D images Image 1
Molecular formula Cu3(PO4)2
Molar mass 380.580722 g/mol (anhydrous)
434.63 g/mol (trihydrate)
Appearance light bluish-green powder (anhydrous)
blue or olive crystals (trihydrate)
Solubility in water insoluble
Solubility anhydrous:
soluble in ammonia
soluble in ammonium hydroxide
slightly soluble in acetone
insoluble in ethanol
Crystal structure orthorhombic (trihydrate)
Related compounds
Other cations Iron(II) phosphate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)

Copper(II) phosphate (not to be confused with copper(I) phosphate) in an cations and the phosphate anions; with the chemical formula Cu3(PO4)2. It may also be regarded as the cupric salt of phosphoric acid.

It is commonly encountered as the hydrated species Cu2(PO4)OH, which is green and occurs naturally as the mineral Libethenite. Anhydrous copper(II) phosphate is blue with triclinic crystals and can be produced by a high temperature reaction between diammonium phosphate and copper(I) oxide.[1]

2 (NH4)2HPO4 + 3 CuO → Cu3(PO4)2 + 3 H2O + 4 NH3


  1. ^ Shoemaker, G. L.; Anderson, J. B.; Kostiner, E. (15 September 1977). "Copper(II) phosphate". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry 33 (9): 2969–2972.  
  • Handbook of chemistry and physics
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