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Merck

470864

Sigma-Aldrich

≥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:
分子量:
159.81
EC號碼:
MDL號碼:
分類程式碼代碼:
12352101
PubChem物質ID:
NACRES:
NA.22

蒸汽密度

7.14 (vs air)

品質等級

蒸汽壓力

175 mmHg ( 20 °C)
671 mmHg ( 55 °C)

化驗

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

電阻係數

7.8E18 μΩ-cm, 20°C

雜質

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

蒸發殘留物

≤0.005%

bp

58.8 °C (lit.)

mp

−7.2 °C (lit.)

密度

3.119 g/mL at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.05%

正離子痕跡

Ni: ≤5 ppm
heavy metals: ≤2 ppm

SMILES 字串

BrBr

InChI

1S/Br2/c1-2

InChI 密鑰

GDTBXPJZTBHREO-UHFFFAOYSA-N

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應用

溴可用作化学合成中的溴化和氧化试剂。
用于:
  • 在光催化条件下,在苄位溴化烷基苯。
  • 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。
  • 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。
  • 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。

其他說明

含有机溴化合物

訊號詞

Danger

危險聲明

危險分類

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

儲存類別代碼

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

水污染物質分類(WGK)

WGK 2

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Faceshields, Gloves, Goggles


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分析证书(COA)

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访问文档库

Bromine
Goehring RR
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Vitalij V Levin et al.
Organic letters, 15(4), 917-919 (2013-02-02)
Reactions of difluorocarbene with benzyl and alkylzinc halides leading to fluorinated organozinc species have been described. The generated α-difluorinated organozinc reagents are reasonably stable in solution and can be quenched with external electrophiles (iodine, bromine, proton), affording compounds containing the
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
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
Bromine-77 and iodine-123 radiopharmaceuticals.
G Stöcklin
The International journal of applied radiation and isotopes, 28(1-2), 131-147 (1977-01-01)

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