Phosphorus trifluoride

Phosphorus trifluoride

Names
IUPAC names Phosphorus trifluoride Phosphorus(III) fluoride Trifluorophosphane Trifluoridophosphorus Perfluorophosphane
Other names Trifluorophosphine Phosphorous fluoride TL-75
Identifiers
CAS Number	7783-55-3 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30205 Y
ChemSpider	56416 Y
ECHA InfoCard	100.029.098
PubChem CID	62665
RTECS number	TH3850000
UNII	496073DYBF Y
CompTox Dashboard (EPA)	DTXSID6064826
InChI InChI=1S/F3P/c1-4(2)3 Y Key: WKFBZNUBXWCCHG-UHFFFAOYSA-N Y InChI=1/F3P/c1-4(2)3 Key: WKFBZNUBXWCCHG-UHFFFAOYAK
SMILES FP(F)F
Properties
Chemical formula	PF3
Molar mass	87.968971 g/mol
Appearance	colorless gas
Density	3.91 g/L, gas
Melting point	−151.5 °C (−240.7 °F; 121.6 K)
Boiling point	−101.8 °C (−151.2 °F; 171.3 K)
Critical point (T, P)	−2.05 °C (28.3 °F; 271.1 K); 42.73 standard atmospheres (4,329.6 kPa; 628.0 psi)
Solubility in water	slow hydrolysis
Structure
Molecular shape	Trigonal pyramidal
Dipole moment	1.03 D
Hazards
NFPA 704 (fire diamond)	3 0 1
Flash point	Non-flammable
Related compounds
Other anions	Phosphorus trichloride Phosphorus tribromide Phosphorus triiodide Phosphane
Other cations	Nitrogen trifluoride Arsenic trifluoride Antimony trifluoride Bismuth trifluoride
Related ligands	Carbon monoxide
Related compounds	Phosphorus pentafluoride
Supplementary data page
Phosphorus trifluoride (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Phosphorus trifluoride (formula PF₃), is a colorless and odorless gas. It is highly toxic and reacts slowly with water. Its main use is as a ligand in metal complexes. As a ligand, it parallels carbon monoxide in metal carbonyls,^[1] and indeed its toxicity is due to its binding with the iron in blood hemoglobin in a similar way to carbon monoxide.