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Merck

222283

Sigma-Aldrich

高氯酸镁

ACS reagent

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5 G
$101.00
100 G
$207.00
500 G
$523.00

About This Item

线性分子式:
Mg(ClO4)2
CAS号:
分子量:
223.21
EC 号:
MDL编号:
UNSPSC代码:
12352300
PubChem化学物质编号:
NACRES:
NB.24

$101.00


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等级

ACS reagent

表单

flakes
powder, chunks or granules

反应适用性

reagent type: oxidant

浓度

>10% Mg (EDTA titration)

杂质

≤0.005 meq/g Titr. free acid
≤0.025 meq/g Titr. base

缺失

≤8% loss on drying

适用性

passes test for moisture absorption

SMILES字符串

[Mg++].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O

InChI

1S/2ClHO4.Mg/c2*2-1(3,4)5;/h2*(H,2,3,4,5);/q;;+2/p-2

InChI key

MPCRDALPQLDDFX-UHFFFAOYSA-L

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一般描述

高氯酸镁(Mg(ClO42)广泛用作气体干燥剂。它能以 0.001 mg 水/L 的速率从气体中去除水分(没有有机污染物)。[1]

应用

高氯酸镁可用作合成下列化合物的催化剂:
  • α-氨基膦酸盐通过胺、醛或酮与二-/三烷基亚磷酸酯之间的三组分反应。[2]
  • 由羰基化合物与胺和苯肼缩合形成亚胺和苯腙。[3]
  • 通过 β-二酮和脂肪族或芳香醛之间发生 Knoevenagel 缩合,形成 Knoevenagel 加成物。[4]
它也可用于催化醇类的保护,作为丁基醚。[5]
高氯酸镁(Mg(ClO4)2)可用作以下研究中的催化剂:
  • 制备 α-氨基膦酸盐。[2]
  • 环戊二烯与 3-丙烯酰基-1,3-恶唑啉-2-酮之间的对映选择性 Diels-Alder 反应。[6]
  • 亚胺和苯腙的制备。[3]
  • 丁基醚的形式保护醇类。[5]

象形图

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警示用语:

Danger

危险分类

Eye Irrit. 2 - Ox. Sol. 2 - Skin Irrit. 2 - STOT SE 3

靶器官

Respiratory system

储存分类代码

5.1A - Strongly oxidizing hazardous materials

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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Slide 1 of 1

1 of 1

Magnesium perchlorate as efficient Lewis acid for the Knoevenagel condensation between ?-diketones and aldehydes.
Bartoli G, et al.
Tetrahedron Letters, 49(16), 2555-2557 (2008)
The first enantioselective synthesis of both Diels-Alder enantiomers with the same bis (oxazoline)-magnesium perchlorate chiral catalyst.
Desimoni G, et al.
Tetrahedron Letters, 37(17), 3027-3030 (1996)
Eagleson M.
Concise Encyclopedia Chemistry, 343-343 (1994)
Magnesium perchlorate as an efficient catalyst for the synthesis of imines and phenylhydrazones.
Chakraborti AK, et al.
Tetrahedron Letters, 45(41), 7641-7644 (2004)
K Miyake et al.
Photochemistry and photobiology, 58(5), 631-636 (1993-11-01)
We have investigated the photosensitized monomerization of the cis,syn-cyclobutane dimer of 1,3-dimethylthymine using riboflavin tetraacetate and a 5-deazaflavin derivative as photosensitizer. Although little monomerization of the dimer is induced by photoexcitation of the flavins in the absence of any additives

Questions

1–2 of 2 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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