Strontium phosphide
Chemical compound
From Wikipedia, the free encyclopedia
Strontium phosphide is an inorganic compound of strontium and phosphorus with the chemical formula Sr
3P
2.[1][2] The compound looks like black crystalline material.[citation needed]
| Names | |
|---|---|
| Other names
Tristrontium diphosphide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.032.422 |
| EC Number |
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PubChem CID |
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| UN number | 2013 |
CompTox Dashboard (EPA) |
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| Properties | |
| P2Sr3 | |
| Molar mass | 324.8 |
| Appearance | Black crystalline material |
| Density | 2.68 g/cm3 |
| Decomposes in water | |
| Structure | |
| cubic | |
| Related compounds | |
Other anions |
Calcium phosphide Barium phosphide |
Other cations |
Strontium nitride Strontium arsenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
Heating strontium phosphate with soot in an arc furnace:
- Sr3(PO4)2 + 8 C → Sr3P2 + 8 CO
Reaction of strontium with red phosphorus at high temperature:[citation needed]
- 6 Sr + P4 → 2 Sr3P2
Physical properties
Strontium phosphide forms black crystals.[citation needed]
Thermally stable, melts at high temperatures.
Dangerous when wet, poison.[3]
Chemical properties
Decomposes with water releasing phosphine:[citation needed]
- Sr3P2 + 2 H2O → 3 Sr(OH)2 + 2 PH3
Reacts with acids:
- Sr3P2 + 6 HCl → 3 SrCl2 + 2 PH3
Uses
It is a highly reactive substance used as a reagent and in the manufacture of chemically reactive devices.[4]