Copper(II) phosphate
Copper(II) phosphate (not to be confused with copper(I) phosphate) is 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.
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| Names | |
|---|---|
| IUPAC name
copper(II) phosphate | |
| Other names
tricopper diphosphate tricopper bis(orthophosphate) | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.322 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| 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) |
| insoluble | |
| Solubility | anhydrous: soluble in ammonia trihydrate: soluble in ammonium hydroxide slightly soluble in acetone insoluble in ethanol |
| Structure | |
| orthorhombic (trihydrate) | |
| Hazards | |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 1 mg/m3 (as Cu)[1] |
REL (Recommended) |
TWA 1 mg/m3 (as Cu)[1] |
IDLH (Immediate danger) |
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 | |
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
References
- NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
- Shoemaker, G. L.; Anderson, J. B.; Kostiner, E. (15 September 1977). "Copper(II) phosphate". Acta Crystallographica Section B. 33 (9): 2969–2972. doi:10.1107/S0567740877010012.
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