Phosphorus tribromide

Phosphorus tribromide
Names
	IUPAC name Phosphorus tribromide
	Other names phosphorus(III) bromide,; phosphorous bromide,; tribromophosphine
Identifiers
CAS Number	7789-60-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	23016 ;
ECHA InfoCard	100.029.253
EC Number	232-178-2;
PubChem CID	24614;
RTECS number	TH4460000;
UNII	58R3866PUA ;
CompTox Dashboard (EPA)	DTXSID7064869 ;
	InChI InChI=1S/Br3P/c1-4(2)3 Key: IPNPIHIZVLFAFP-UHFFFAOYSA-N ;
	SMILES BrP(Br)Br;
Properties
Chemical formula	PBr3
Molar mass	270.69 g/mol
Appearance	clear, colourless liquid
Density	2.852 g/cm3
Melting point	−41.5 °C (−42.7 °F; 231.7 K)
Boiling point	173.2 °C (343.8 °F; 446.3 K)
Solubility in water	rapid hydrolysis
Refractive index (nD)	1.697
Viscosity	0.001302 Pas
Structure
Molecular shape	trigonal pyramidal
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H335
Precautionary statements	P260, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P363, P403+P233, P405, P501 Preview warning: Omit Rules: keep P260, omit P261
NFPA 704 (fire diamond)	3 0 2 W
Related compounds
Other anions	phosphorus trifluoride; phosphorus trichloride; phosphorus triiodide
Other cations	nitrogen tribromide; arsenic tribromide; antimony tribromide
Related compounds	phosphorus pentabromide; phosphorus oxybromide
Supplementary data page
	Phosphorus tribromide (data page)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Phosphorus tribromide is a colourless liquid with the formula P Br₃. The liquid fumes in moist air due to hydrolysis and has a penetrating odour. It is used in the laboratory for the conversion of alcohols to alkyl bromides.