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Merck

342793

Sigma-Aldrich

氧化镁

≥99% trace metals basis, -325 mesh

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250 G
$262.00
1 KG
$516.00

$262.00


预计发货时间2025年4月07日详情


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250 G
$262.00
1 KG
$516.00

About This Item

线性分子式:
MgO
CAS号:
分子量:
40.30
EC 号:
MDL编号:
UNSPSC代码:
12352303
PubChem化学物质编号:
NACRES:
NA.21

$262.00


预计发货时间2025年4月07日详情


获取大包装报价

等级

for analytical purposes

方案

≥99% trace metals basis

表单

powder

反应适用性

reagent type: catalyst
core: magnesium

缺失

10% loss on ignition, 1000°C (absorbed H2O and CO2)

粒径

-325 mesh

mp

2852 °C (lit.)

SMILES字符串

O=[Mg]

InChI

1S/Mg.O

InChI key

CPLXHLVBOLITMK-UHFFFAOYSA-N

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一般描述

氧化镁是一种温和的碱性试剂,用于酰化、烷基化、氧化、还原、杂环的形成、叔胺的开环、芳族缩醛的硝化、氢卤化、脱卤化氢、有机汞的羰基化,并作为离去基团形成烯烃。

应用

氧化镁可作为催化剂用于:
  • -辛烷脱氢合成辛烯。
  • 芳香醛和氰乙酸乙酯的无溶剂Knoevenagel缩合反应合成亲电烯烃。

分析说明

纯度基于金属杂质含量。

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Nature, 721-722 (1985)
Eagleson M.
Concise Encyclopedia Chemistry, 495-495 (1994)
Magnesium oxide-catalysed reaction of carbon dioxide with an epoxide with retention of stereochemistry.
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Questions

1–2 of 2 Questions  
  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

      Helpful?

  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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