Contents

Strontium phosphide

Strontium phosphide

Names
Other names Tristrontium diphosphide
Identifiers
CAS Number	12504-16-4
3D model (JSmol)	Interactive image
ChemSpider	145854
ECHA InfoCard	100.032.422
EC Number	235-678-9
PubChem CID	166710
UN number	2013
CompTox Dashboard (EPA)	DTXSID30894176
InChI InChI=1S/2P.3Sr/q2*-3;3*+2 Key: ATAJSUOOOWSVGL-UHFFFAOYSA-N
SMILES [P-3].[P-3].[Sr+2].[Sr+2].[Sr+2]
Properties
Chemical formula	P2Sr3
Molar mass	324.8
Appearance	Black crystalline material
Density	2.68 g/cm3
Solubility in water	Decomposes in water
Structure
Crystal 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). Infobox references

Chemical compound

Strontium phosphide is an inorganic compoundofstrontium and phosphorus with the chemical formula Sr
₃P
₂.^[1][2] The compound looks like black crystalline material.^{[citation needed]}

Synthesis[edit]

Heating strontium phosphate with soot in an arc furnace:

${\displaystyle {\ce {Sr3(PO4)2 + 8C -> Sr3P2 + 8CO}}}$

Reaction of strontium with red phosphorus at high temperature:^{[citation needed]}

${\displaystyle {\ce {6Sr + P4 -> 2Sr3P2}}}$

Physical properties[edit]

Strontium phosphide forms black crystals.^{[citation needed]}

Thermally stable, melts at high temperatures.

Dangerous when wet, poison.^[3]

Chemical properties[edit]

Decomposes with water releasing phosphine:^{[citation needed]}

${\displaystyle {\ce {Sr3P2 + 2H2O -> 3Sr($OH)2 + 2PH3}}}

Reacts with acids:

${\displaystyle {\ce {Sr3P2 + 6HCl -> 3SrCl2 + 2PH3}}}$

Uses[edit]

It is a highly reactive substance used as a reagent and in the manufacture of chemically reactive devices.^[4]

References[edit]