277576

Brom

ACS reagent, ≥99.5%

• Empirische Formel (Hill-System): Br₂
• CAS-Nummer: 7726-95-6
• Molekulargewicht: 159.81
• EG-Nummer: 231-778-1
• MDL-Nummer: MFCD00010896
• UNSPSC-Code: 12141915
• PubChem Substanz-ID: 329753018
• NACRES: NA.21

Eigenschaften

• Qualität: ACS reagent
• Dampfdichte: 7.14 (vs air)
• Dampfdruck: 175 mmHg ( 20 °C); 671 mmHg ( 55 °C)
• Assay: ≥99.5%
• Form: liquid
• Widerstandsfähigkeit: 7.8E18 μΩ-cm, 20°C
• Verunreinigungen: organic bromine compounds, passes test; ≤0.001% I₂; ≤0.001% S compounds
• Abdampfrückstand: ≤0.005%
• bp: 58.8 °C (lit.)
• mp (Schmelzpunkt): −7.2 °C (lit.)
• Dichte: 3.119 g/mL at 25 °C (lit.)
• Anionenspuren: chloride (Cl^-): ≤0.05%
• Kationenspuren: Ni: ≤5 ppm; heavy metals: ≤2 ppm
• SMILES String: BrBr
• InChI: 1S/Br2/c1-2
• InChIKey: GDTBXPJZTBHREO-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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

Anwendung

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.

Sicherheitshinweise

• Piktogramme: GHS06,GHS05,GHS09
• Signalwort: Danger
• H-Sätze: H314,H330,H400
• P-Sätze: P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 1 Inhalation - Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1A
• Lagerklassenschlüssel: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 2
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable