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470864

Sigma-Aldrich

溴

≥99.99% trace metals basis

别名:

二溴

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About This Item

经验公式（希尔记法）:
Br2
CAS号:
7726-95-6
分子量:
159.81
EC 号:
231-778-1
MDL编号:
MFCD00010896
UNSPSC代码:
12352101
PubChem化学物质编号:
24870690
NACRES:
NA.22
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蒸汽密度

7.14 (vs air)

质量水平

100

蒸汽压

175 mmHg ( 20 °C)
671 mmHg ( 55 °C)

方案

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

电阻率

7.8E18 μΩ-cm, 20°C

杂质

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

蒸发残留物

≤0.005%

沸点

58.8 °C (lit.)

mp

−7.2 °C (lit.)

密度

3.119 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl-): ≤0.05%

痕量阳离子

Ni: ≤5 ppm
heavy metals: ≤2 ppm

SMILES字符串

BrBr

InChI

1S/Br2/c1-2

InChI key

GDTBXPJZTBHREO-UHFFFAOYSA-N

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相关类别

应用

溴可用作化学合成中的溴化和氧化试剂。[1][2]
用于：
  • 在光催化条件下，在苄位溴化烷基苯。[1][2]
  • 在路易斯酸催化剂存在下，通过亲电芳香取代反应制备芳香族化合物。[1]
  • 在三卤化磷存在下，通过Hell-Volhard-Zelinski反应在羰基位溴化羰基化合物。[2]
  • 在碱存在下，与一级酰胺通过霍夫曼重排反应制备异氰酸酯、甲酸酯或胺类物质。[1]

其他说明

含有机溴化合物

警示用语：

Danger

危险声明

H314,H330,H400

危险分类

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

储存分类代码

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

WGK

WGK 2

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Faceshields, Gloves, Goggles

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SHBQ6654
SHBP8808
SHBN5393
MKCK4524
SHBJ1858

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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)
Bromine-77 and iodine-123 radiopharmaceuticals.
G Stöcklin
The International journal of applied radiation and isotopes, 28(1-2), 131-147 (1977-01-01)
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
Nickel-butadiene catalytic system for the cross-coupling of bromoalkanoic acids with alkyl Grignard reagents: a practical and versatile method for preparing fatty acids.
Takanori Iwasaki et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(9), 2956-2960 (2013-02-02)
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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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