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207888

Sigma-Aldrich

Bromine

reagent grade

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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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1 of 4

This Item
2775761.019458.20171
vibrant-m

207888

Bromine

Essential Grade
vibrant-m

277576

Bromine

Essential Grade
vibrant-m

1.01945

Bromine

-
vibrant-m

8.20171

Bromine

-
Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

200

assay

98.0-102.0% (by Na2S2O3, titration)

assay

≥99.5%

assay

-

assay

-

vapor pressure

175 mmHg ( 20 °C), 671 mmHg ( 55 °C)

vapor pressure

175 mmHg ( 20 °C), 671 mmHg ( 55 °C)

vapor pressure

233 hPa ( 20 °C)

vapor pressure

233 hPa ( 20 °C)

mp

−7.2 °C (lit.)

mp

−7.2 °C (lit.)

mp

-7.3 °C

mp

-7.3 °C

density

3.119 g/mL at 25 °C (lit.)

density

3.119 g/mL at 25 °C (lit.)

density

3.12 g/cm3 at 20 °C (liquid)

density

3.12 g/cm3 at 20 °C (liquid)

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


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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)
Use of Bromine and Bromo-Organic Compounds in Organic Synthesis.
Saikia I, et al.
Chemical Reviews (2016)
Jennifer A Kozak et al.
Journal of the American Chemical Society, 135(49), 18497-18501 (2013-11-22)
A continuous method for the formation of cyclic carbonates from epoxides and carbon dioxide (CO2) is described. The catalysts used are inexpensive and effective in converting the reagents to the products in a residence time (t(R)) of 30 min. The
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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