256536

Phosphortribromid

99%

• Synonym(e): Phosphor(III)-bromid
• Lineare Formel: PBr₃
• CAS-Nummer: 7789-60-8
• Molekulargewicht: 270.69
• EG-Nummer: 232-178-2
• MDL-Nummer: MFCD00011436
• UNSPSC-Code: 12352101
• PubChem Substanz-ID: 24855534
• NACRES: NA.22

Eigenschaften

• Dampfdruck: 0.27 psi ( 54 °C)
• Assay: 99%
• Form: liquid
• Brechungsindex: n20/D 1.697 (lit.)
• bp: 175 °C (lit.)
• mp (Schmelzpunkt): −41.5 °C (lit.)
• Dichte: 2.88 g/mL at 20 °C (lit.)
• SMILES String: BrP(Br)Br
• InChI: 1S/Br3P/c1-4(2)3
• InChIKey: IPNPIHIZVLFAFP-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Phosphorus tribromide (PBr₃) is commonly used in Hell-Volhard-Zelinsky halogenation for the α-bromination of carboxylic acids to form the corresponding acyl bromide. It is also useful for the conversion of primary and secondary alcohols to alkyl bromides.

Anwendung

Phosphorus tribromide may be used as a reagent:

• In a novel protocol for synthesizing 7-ethoxy-1-(p-ethylphenoxy)-3,7-dimethyl-2-octene, a synthetic juvenile hormone mimic of trans,trans,cis-10,11-epoxy-7-ethyl-3,11-dimethyltrideca-2,6-dienoate.
• To synthesize 1,2,3-diazaphosphinane, 1,2,3-thiazaphosphinine and 1,2-azaphosphole bearing a chromone ring.
• To synthesize 1-Bromoundec-1-ene from 10-undecen-1-ol.

Sicherheitshinweise

• Piktogramme: GHS05,GHS07
• Signalwort: Danger
• H-Sätze: H314,H335
• P-Sätze: P261 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Dam. 1 - Skin Corr. 1B - STOT SE 3
• Zielorgane: Respiratory system
• Zusätzliche Gefahrenhinweise: EUH014
• Lagerklassenschlüssel: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter