Phosphoryl bromide

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Phosphoryl bromide
Phosphoryl bromide.svg
CAS number 7789-59-5
Molecular formula POBr3
Molar mass 286.69 g/mol
Density 2.82 g cm-3
Melting point 56 °C (133 °F; 329 K)
Boiling point 192 °C (378 °F; 465 K)
EU classification Corrosive C
R-phrases R14, R34, R37
S-phrases S7/8, S26, S36/37/39, S43, S45
Related compounds
Related compounds Phosphorus tribromide
Thiophosphoryl bromide
Phosphoryl fluoride
Phosphoryl chloride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Phosphoryl bromide, also known as phosphorus oxybromide, is an inorganic compound with the formula POBr3.

Title: Phosphorus Oxybromide

CAS Registry Number: 7789-59-5 CAS Name: Phosphoryl bromide Additional Names: phosphoryl tribromide Molecular Formula: Br3OP Molecular Weight: 286.69 Percent Composition: Br 83.61%, O 5.58%, P 10.80% Line Formula: POBr3

Literature References: Prepd according to the equation: 3PBr5 + P2O5 ® 5POBr3: Hönigschmid, Hirschbold-Wittner, Z. Anorg. Allg. Chem. 243, 355 (1940); Johnson, Nunn, J. Am. Chem. Soc. 63, 141 (1941); Booth, Seegmiller, Inorg. Synth. 2, 151 (1946). Properties: Thin plates, faint orange tint, d 2.822. mp 56° (in hot water). bp758 193° (dec). Slowly hydrolyzes in water forming H3PO4 and HBr. Sol in ether, benzene, chloroform, carbon disulfide, concd H2SO4. Store in sealed glass ampuls!

Melting point: mp 56° (in hot water) Boiling point: bp758 193° (dec) Density: d 2.822