Iron phosphide

Iron phosphide is a chemical compound of iron and phosphorus, with a formula of FeP.^[1] Crystals are isolated as grey needles.

Iron phosphide

Identifiers
CAS Number	26508-33-8 Y
3D model (JSmol)	Interactive image
ChemSpider	140223
ECHA InfoCard	100.043.395
EC Number	247-751-2
PubChem CID	117803
CompTox Dashboard (EPA)	DTXSID5067215
InChI Key: DPTATFGPDCLUTF-UHFFFAOYSA-N InChI=1S/3Fe.H3P/h;;;1H3
SMILES [Fe]#P
Properties
Chemical formula	FeP
Molar mass	86.819 g·mol−1
Density	6.74 g/cm3
Melting point	1,100 °C (2,010 °F; 1,370 K)
Solubility in water	Insoluble in water
Solubility	soluble in nitric acid, HF, aqua regia insoluble in dilute acid, alkalis
Structure[1]
Crystal structure	MnP type (Orthorhombic)
Space group	Pnma (No. 62)
Lattice constant	a = 519.1 pm, b = 309.9 pm, c = 579.2 pm
Lattice volume (V)	93.2 Å3
Related compounds
Other cations	Chromium phosphide Manganese phosphide Cobalt phosphide Tungsten phosphide Ruthenium phosphide
Related compounds	Fe2P; Fe3P
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Manufacturing of iron phosphide takes place at elevated temperatures, where the elements combine directly.^[1] Iron phosphide reacts with moisture and acids producing phosphine (PH₃), a toxic and pyrophoric gas.

Iron phosphide is a good electric and heat conductor.^[2]

Below a Néel temperature of about 119 K, FeP takes on an helimagnetic structure.^[3]