277576

Bromine

ACS reagent, ≥99.5%

• Formule empirique (notation de Hill): Br₂
• Numéro CAS: 7726-95-6
• Poids moléculaire : 159.81
• Numéro CE : 231-778-1
• Numéro MDL: MFCD00010896
• Code UNSPSC : 12141915
• ID de substance PubChem : 329753018
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Densité de vapeur: 7.14 (vs air)
• Pression de vapeur: 175 mmHg ( 20 °C); 671 mmHg ( 55 °C)
• Pureté: ≥99.5%
• Forme: liquid
• Résistivité: 7.8E18 μΩ-cm, 20°C
• Impuretés: organic bromine compounds, passes test; ≤0.001% I₂; ≤0.001% S compounds
• Résidus d'évap.: ≤0.005%
• Point d'ébullition: 58.8 °C (lit.)
• Pf: −7.2 °C (lit.)
• Densité: 3.119 g/mL at 25 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤0.05%
• Traces de cations: Ni: ≤5 ppm; heavy metals: ≤2 ppm
• Chaîne SMILES: BrBr
• InChI: 1S/Br2/c1-2
• Clé InChI: GDTBXPJZTBHREO-UHFFFAOYSA-N

Description

Description générale

Bromine is a highly volatile and reactive halogen that can be used as a powerful brominating and oxidizing agent in chemical synthesis.

Application

Bromine can be used as a brominating agent for the bromination of:

• Aromatic and heterocyclic compounds. 
• Carbonyl compounds at α position to carbonyl groups.
• Aromatic carboxylic acids via Hell-Volhard-Zelinski reaction in the presence of phosphorus trihalides.
• Alkylbenzenes at the benzylic position using photocatalytic conditions.

It can also be used as an oxidizing agent for the oxidation of:

• Primary alcohols to either aldehydes or esters.      
• Secondary alcohols to ketones.

It can also be used as a Lewis acid catalyst to:     

• Convert epoxides and CO₂ to cyclic carbonates in a continuous flow system.     
• Synthesize bis(indolyl)methanes by reacting indoles with carbonyl compounds.

Informations sur la sécurité

• Pictogrammes: GHS06,GHS05,GHS09
• Mention d'avertissement: Danger
• Mentions de danger: H314,H330,H400
• Conseils de prudence: P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 1 Inhalation - Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1A
• Code de la classe de stockage: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable