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470864

Sigma-Aldrich

Bromine

≥99.99% trace metals basis

Synonyme(s) :

Dibromine

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About This Item

Formule empirique (notation de Hill) :
Br2
Numéro CAS:
7726-95-6
Poids moléculaire :
159.81
Numéro CE :
231-778-1
Numéro MDL:
MFCD00010896
Code UNSPSC :
12352101
ID de substance PubChem :
24870690
Nomenclature NACRES :
NA.22

56.40 CHF

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Devis pour commande en gros

Densité de vapeur

7.14 (vs air)

Pression de vapeur

175 mmHg ( 20 °C)
671 mmHg ( 55 °C)

Essai

≥99.5% (by Na2S2O3, titration)
≥99.99% trace metals basis

Résistivité

7.8E18 μΩ-cm, 20°C

Impuretés

≤0.001% I2
≤0.001% S compounds
<100 ppm total metallic impurities

Résidus d'évap.

≤0.005%

pb

58.8 °C (lit.)

Pf

−7.2 °C (lit.)

Densité

3.119 g/mL at 25 °C (lit.)

Traces d'anions

chloride (Cl-): ≤0.05%

Traces de cations

Ni: ≤5 ppm
heavy metals: ≤2 ppm

Chaîne SMILES 

BrBr

InChI

1S/Br2/c1-2

Clé InChI

GDTBXPJZTBHREO-UHFFFAOYSA-N

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Catégories apparentées

Application

Bromine can be used as a brominating and oxidizing agent in chemical synthesis.[1][2]
It can be used:
  • To brominate alkylbenzenes at the benzylic position using photocatalytic conditions.[1][2]
  • To prepare brominated aromatic compounds by electrophilic aromatic substitution reactions in the presence of Lewis acid catalysts.[1]
  • For the bromination of carbonyl compounds at a carbonyl group via Hell-Volhard-Zelinski reaction in the presence of phosphorus trihalides.[2]
  • To prepare isocyanates, carbamates, or amines by reacting with primary amides in the presence of base via Hofmann rearrangement.[1]

Autres remarques

Contains organic bromine compounds

Pictogrammes

Skull and crossbonesCorrosionEnvironment
GHS06,GHS05,GHS09

Mention d'avertissement

Danger

Mentions de danger

H314,H330,H400

Classification des risques

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

Code de la classe de stockage

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Faceshields, Gloves, Goggles

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Certificats d'analyse (COA)

Lot/Batch Number
SHBQ6654
SHBP8808
SHBN5393
MKCK4524
SHBJ1858

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Consulter la Bibliothèque de documents

Bromine
Goehring RR
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Use of bromine and bromo-organic compounds in organic synthesis
Saikia I, et al.
Chemical Reviews, 116, 6837-7042 (2016)
John D Sivey et al.
Environmental science & technology, 47(3), 1330-1338 (2013-01-18)
HOBr, formed via oxidation of bromide by free available chlorine (FAC), is frequently assumed to be the sole species responsible for generating brominated disinfection byproducts (DBPs). Our studies reveal that BrCl, Br(2), BrOCl, and Br(2)O can also serve as brominating
Kimberly T Barrett et al.
Journal of the American Chemical Society, 135(8), 2963-2966 (2013-02-16)
We report the enantioselective synthesis of atropisomeric benzamides employing catalytic electrophilic aromatic substitution reactions involving bromination. The catalyst is a simple tetrapeptide bearing a tertiary amine that may function as a Brønsted base. A series of tri- and dibrominations were
Teresa M Bisson et al.
Environmental science & technology, 46(21), 12186-12193 (2012-10-02)
Recent laboratory and field-scale experiments demonstrated the potential for brominated industrial solid waste from biomass combustion (Br-Ash) to be an efficient, cost-effective alternative to activated carbon for capturing mercury from coal-fired power plants. To develop this attractive alternative technology to
Afficher tous les articles scientifiques apparentés

Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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