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207888

Sigma-Aldrich

溴

Bromine

reagent grade

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About This Item

經驗公式（希爾表示法）:
Br2
CAS號碼:
7726-95-6
分子量：:
159.81
EC號碼:
231-778-1
MDL號碼:
MFCD00010896
分類程式碼代碼:
12141915
PubChem物質ID:
329752027
NACRES:
NA.21
化驗:
98.0-102.0% (by Na2S2O3, titration)
等級:
reagent grade
形狀:
liquid
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等級

reagent grade

品質等級

100

蒸汽密度

7.14 (vs air)

蒸汽壓力

175 mmHg ( 20 °C)
671 mmHg ( 55 °C)

化驗

98.0-102.0% (by Na2S2O3, titration)

形狀

liquid

電阻係數

7.8E18 μΩ-cm, 20°C

bp

58.8 °C (lit.)

mp

−7.2 °C (lit.)

密度

3.119 g/mL at 25 °C (lit.)

SMILES 字串

BrBr

InChI

1S/Br2/c1-2

InChI 密鑰

GDTBXPJZTBHREO-UHFFFAOYSA-N

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相關類別

一般說明

溴在海洋活动产生的低层大气中以气态形式存在，并且是含铅汽油燃烧产生的一种副产物。[1]它被广泛用作溴化剂。[2]

應用

溴可用于催化：
  • 用氯胺-T对烯烃进行氮杂环丙烷化以形成 N-甲苯磺酰基氮丙啶。[3]
  • 在连续流动系统中将环氧化物和CO2 转化为环状碳酸酯。[4]
溴可用作制备如下化合物的反应物之一：
  • 醌[5]
  • α,β-二溴琥珀酸[6]
  • （Z）-乙基-2-溴-5-（三甲基甲硅烷基）-戊-2-烯-4-炔酸乙酯[6]
  • α,α′-二溴-2′,4′-二硝基-2（或3或4）-（乙酰氧基）联苄[6]
  • 二苄基萘酚[6]

訊號詞

Danger

危險聲明

H314,H330,H400

危險分類

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

儲存類別代碼

6.1A - 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

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
SHBQ9711
SHBQ9738
SHBQ9710
SHBQ0888
SHBP9508

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Metal Free Conducting PEDOS, PEDOT, and Their Analogues via an Unusual Bromine-Catalyzed Polymerization.
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Macromolecules, 48(24), 8760-8764 (2015)
Reaction of bromine and chlorine with phenolic compounds and natural organic matter extracts-Electrophilic aromatic substitution and oxidation.
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Use of Bromine and Bromo-Organic Compounds in Organic Synthesis.
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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)
The chemistry of atmospheric bromine.
Wofsy SC, et al.
Geophysical Research Letters, 2(6), 215-218 (1975)
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Questions

1–3 of 3 Questions  

  1. 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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  2. 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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  3. How long of shelf life does Br2 have

    1 answer

    1. This product is not assigned an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.

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Reviews

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  1. UK
    • Review 1
    • Votes 5
    5 out of 5 stars.

    top purchase

    dark brown liquid that brominated my compound, would recommend

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