Phosphorus Tribromide

• CAT Number: R051912
• CAS Number: 7789-60-8
• Molecular Formula: PBr3
• Molecular Weight: 270.69
• Purity: ≥95%
• Synonyms: Phosphorus Bromide; Phosphorous Bromide; Tribromophosphine
• Storage: 2-8°C
• IUPAC Name: tribromophosphane
• InChI: InChI=1S/Br3P/c1-4(2)3
• InChIKey: IPNPIHIZVLFAFP-UHFFFAOYSA-N
• SMILES: P(Br)(Br)Br

Phosphorus tribromide (Cat No.: R051912) is a reactive inorganic compound composed of one phosphorus atom and three bromine atoms. It is a colorless to yellowish fuming liquid used primarily as a reagent for converting alcohols to alkyl bromides in organic synthesis. PBr₃ reacts vigorously with water and alcohols, releasing hydrogen bromide (HBr) as a byproduct. It is also employed in the preparation of organophosphorus compounds and acyl bromides. Due to its corrosive and toxic nature, it must be handled with appropriate safety precautions.