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Sigma-Aldrich

Bromine

reagent grade

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About This Item

Empirical Formula (Hill Notation):
Br2
CAS Number:
7726-95-6
Molecular Weight:
159.81
EC Number:
231-778-1
MDL number:
MFCD00010896
UNSPSC Code:
12352300
PubChem Substance ID:
329752027
NACRES:
NA.21

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

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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.

signalword

Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1A

Storage Class

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Use of Bromine and Bromo-Organic Compounds in Organic Synthesis.
Saikia I, et al.
Chemical Reviews (2016)
Metal Free Conducting PEDOS, PEDOT, and Their Analogues via an Unusual Bromine-Catalyzed Polymerization.
Patra A, et al.
Macromolecules, 48(24), 8760-8764 (2015)
Reaction of bromine and chlorine with phenolic compounds and natural organic matter extracts-Electrophilic aromatic substitution and oxidation.
Criquet J, et al.
Water Research, 85, 476-486 (2015)
The chemistry of atmospheric bromine.
Wofsy SC, et al.
Geophysical Research Letters, 2(6), 215-218 (1975)
Bromine-catalyzed aziridination of olefins. A rare example of atom-transfer redox catalysis by a main group element.
Jeong JUK, et al.
Journal of the American Chemical Society, 120(27), 6844-6845 (1998)
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