207888

Bromine

reagent grade

• Empirical Formula (Hill Notation): Br₂
• CAS Number: 7726-95-6
• Molecular Weight: 159.81
• EC Number: 231-778-1
• MDL number: MFCD00010896
• UNSPSC Code: 12141915
• PubChem Substance ID: 329752027
• NACRES: NA.21

Properties

• grade: reagent grade
• Quality Level: 100
• vapor density: 7.14 (vs air)
• vapor pressure: 175 mmHg ( 20 °C); 671 mmHg ( 55 °C)
• Assay: 98.0-102.0% (by Na₂S₂O₃, titration)
• form: liquid
• resistivity: 7.8E18 μΩ-cm, 20°C
• bp: 58.8 °C (lit.)
• mp: −7.2 °C (lit.)
• density: 3.119 g/mL at 25 °C (lit.)
• SMILES string: BrBr
• InChI: 1S/Br2/c1-2
• InChI key: GDTBXPJZTBHREO-UHFFFAOYSA-N

Description

General description

Bromine is present in gaseous form in lower atmosphere generated by marine activity and as a by product produced from the leaded gasoline combustion. It is widely used as a brominating agent.

Application

Bromine may be used as one of the reactants in the preparation of:

• quinones
• α,β-dibromosuccinic acid
• (Z)-ethyl 2-bromo-5-(trimethylsilyl)pent-2-en-4-ynoate
• α,α′-dibromo-2′,4′-dinitro-2(or3 or 4)-(acetyloxy)bibenzyls
• dibenzylnaphthols

Bromine may be used to catalyze:

• Aziridination of olefins with chloramine-T to form N-tosyl aziridines.
• Conversion of epoxides and CO₂ to cyclic carbonates in a continuous flow system.

Safety Information

• Pictograms: GHS06,GHS05,GHS09
• Signal Word: Danger
• Hazard Statements: H314,H330,H400
• Precautionary Statements: P260 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 1 Inhalation - Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1A
• Storage Class Code: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable