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Merck

205281

Sigma-Aldrich

高氯酸锂

ACS reagent, ≥95.0%

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5 G
$107.00
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About This Item

线性分子式:
LiClO4
CAS号:
分子量:
106.39
EC 号:
MDL编号:
UNSPSC代码:
12352302
PubChem化学物质编号:
NACRES:
NA.21

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等级

ACS reagent

质量水平

方案

≥95.0%

表单

powder, chunks or granules

反应适用性

reagent type: oxidant

杂质

≤0.005% insolubles

pH值(酸碱度)

6.0-7.5 (25 °C, 5%)

mp

236 °C (lit.)

痕量阴离子

chloride (Cl-): ≤0.003%
sulfate (SO42-): ≤0.001%

痕量阳离子

Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

SMILES字符串

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

InChI

1S/ClHO4.Li/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1

InChI key

MHCFAGZWMAWTNR-UHFFFAOYSA-M

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一般描述

高氯酸锂 (LiClO 4) 是一种无色锂盐。从其水溶液结晶,得到高氯酸锂三水合物(LiClO 4.3H2O)。它可以通过氯化锂与高氯酸反应合成。[1]

应用

当用作助催化剂时,加速 Baylis-Hillman 反应,α, β-不饱和羰基化合物与醛的偶合。[2]
高氯酸锂 (LiClO 4) 可用作合成二(吲哚基)甲烷的催化剂。[3]
高氯酸锂可用于催化:
  • 在无溶剂条件下受阻醇和酚类的酰化反应。[4]
  • O -硅基乙烯酮缩醛与受阻 α,β不饱和羰基系统的 1,4-共轭加成反应。[5]
  • 胺基团作为 N -Boc 衍生物经由 -丁氧羰基化的保护。[6]
  • 无溶剂条件下的α-氨基膦酸盐合成。[7]

警示用语:

Danger

危险分类

Acute Tox. 4 Oral - Eye Dam. 1 - Ox. Sol. 2 - Skin Corr. 1A - 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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Lithium Perchlorate-Catalyzed Three-Component Coupling: A Facile and General Method for the Synthesis of a-Aminophosphonates under Solvent-Free Conditions.
Azizi N and Saidi MR.
European Journal of Organic Chemistry, 2003(23), 4630-4633 (2003)
Lithium Perchlorate-Catalyzed Boc Protection of Amines and Amine Derivatives.
Heydari A and Hosseini SE.
Advanced Synthesis & Catalysis, 347(15), 1929-1932 (2005)
Lithium perchlorate catalyzed acetylation of alcohols under mild reaction conditions.
Nakae Y, et al.
Synlett, 2001(10), 1584-1586 (2001)
Lithium perchlorate catalyzed conjugate addition of O-silylated ketene acetals to hindered a, ?-unsaturated carbonyl compounds at atmospheric pressure.
Grieco PA, et al.
Tetrahedron Letters, 32(36), 4665-4668 (1991)
Kawamura, M. Kobayashi, S.
Tetrahedron Letters, 40, 1539-1539 (1999)

Questions

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  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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