277576

Bromina

ACS reagent, ≥99.5%

• Formula empirica (notazione di Hill): Br₂
• Numero CAS: 7726-95-6
• Peso molecolare: 159.81
• Numero CE: 231-778-1
• Numero MDL: MFCD00010896
• Codice UNSPSC: 12352300
• ID PubChem: 329753018
• NACRES: NA.21

Proprietà

• Grado: ACS reagent
• Livello qualitativo: 200
• Densità del vapore: 7.14 (vs air)
• Tensione di vapore: 175 mmHg ( 20 °C); 671 mmHg ( 55 °C)
• Saggio: ≥99.5%
• Forma fisica: liquid
• Resistività: 7.8E18 μΩ-cm, 20°C
• Impurezze: organic bromine compounds, passes test; ≤0.001% I₂; ≤0.001% S compounds
• Residuo dopo evaporazione: ≤0.005%
• P. eboll.: 58.8 °C (lit.)
• Punto di fusione: −7.2 °C (lit.)
• Densità: 3.119 g/mL at 25 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤0.05%
• Cationi in tracce: Ni: ≤5 ppm; heavy metals: ≤2 ppm
• Stringa SMILE: BrBr
• InChI: 1S/Br2/c1-2; GDTBXPJZTBHREO-UHFFFAOYSA-N

Descrizione

Descrizione generale

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

Applicazioni

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.

Informazioni sulla sicurezza

• Pittogrammi: GHS05,GHS06,GHS09
• Avvertenze: Danger
• Indicazioni di pericolo: H314 - H330 - H400
• Consigli di prudenza: P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classi di pericolo: Acute Tox. 1 Inhalation - Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1A
• Codice della classe di stoccaggio: 6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable