Copper(II) phosphate

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Copper(II) phosphate
Fosforečnan měďnatý.PNG
IUPAC name
copper(II) phosphate
Other names
tricopper diphosphate
tricopper bis(orthophosphate)
7798-23-4 YesY
ChemSpider 77984 YesY
Jmol-3D images Image
PubChem 86469
Molar mass 380.580722 g/mol (anhydrous)
434.63 g/mol (trihydrate)
Appearance light bluish-green powder (anhydrous)
blue or olive crystals (trihydrate)
Solubility anhydrous:
soluble in ammonia
soluble in ammonium hydroxide
slightly soluble in acetone
insoluble in ethanol
orthorhombic (trihydrate)
US health exposure limits (NIOSH):
TWA 1 mg/m3 (as Cu)[1]
TWA 1 mg/m3 (as Cu)[1]
TWA 100 mg/m3 (as Cu)[1]
Related compounds
Other cations
Iron(II) phosphate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Copper(II) phosphate (not to be confused with copper(I) phosphate) in an inorganic compound consisting of copper 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(II) oxide.[2]

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


  1. ^ a b c "NIOSH Pocket Guide to Chemical Hazards #0150". National Institute for Occupational Safety and Health (NIOSH). 
  2. ^ 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. doi:10.1107/S0567740877010012.