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207888

Sigma-Aldrich

Bromine

reagent grade

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

grade

reagent grade

Quality Level

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

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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.

Packaging

100, 4×100, 500 g 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

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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