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277576

Sigma-Aldrich

Bromine

ACS reagent, ≥99.5%

Empirical Formula (Hill Notation):
Br2
CAS Number:
Molecular Weight:
159.81
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

7.14 (vs air)

vapor pressure

175 mmHg ( 20 °C)
671 mmHg ( 55 °C)

assay

≥99.5%

form

liquid

resistivity

7.8E18 μΩ-cm, 20°C

impurities

organic bromine compounds, passes test
≤0.001% I2
≤0.001% S compounds

evapn. residue

≤0.005%

bp

58.8 °C (lit.)

mp

−7.2 °C (lit.)

density

3.119 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.05%

cation traces

Ni: ≤5 ppm
heavy metals: ≤2 ppm

SMILES string

BrBr

InChI

1S/Br2/c1-2

InChI key

GDTBXPJZTBHREO-UHFFFAOYSA-N

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General description

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.

Packaging

100, 4×100, 450 g in glass bottle
2 kg in glass bottle

Signal Word

Danger

Hazard Statements

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

Certificate of Analysis

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Certificate of Origin

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