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199966

Sigma-Aldrich

Oxyde d'aluminium

Aluminum oxide

Brockmann I, standard grade, activated, acidic

Synonyme(s) :

Alumina

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100 G
82,90 $
1 KG
174,00 $
5 KG
554,00 $

About This Item

Formule linéaire :
Al2O3
Numéro CAS:
1344-28-1
Poids moléculaire :
101.96
Numéro CE :
215-691-6
Numéro MDL:
MFCD00003424
Code UNSPSC :
12352311
eCl@ss :
38120402
ID de substance PubChem :
329751965
Nomenclature NACRES :
SB.52

82,90 $

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Agence

suitable for EPA 1613

Forme

powder

Fabricant/nom de marque

CAMAG 504-C-I

Technique(s)

ion chromatography: suitable

Impuretés

<0.03% Fe2O3
<0.03% SiO2
<0.4% Na2O

Taille des particules

50-300 mesh

Dimension de pores

58 Å pore size

pH

4.5±0.5 ( in H2O)

Pf

2040 °C (lit.)

Traces d'anions

chloride (Cl-): ≤0.14 (mval/g)

Chaîne SMILES 

O=[Al]O[Al]=O

InChI

1S/2Al.3O

Clé InChI

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
The mechanism of formation of protective scales of α-Al2O3 (aluminum oxide) on surfaces of binary M-Al (M = Fe, Ni or Co) alloys at high temperatures has been studied.[1] Activated aluminum oxides having different acidities and water concentrations (having Brockmann activity I-V) can easily detect various types of water (namely free water, pore water, and bound water) on the aluminum oxide present in soils.[2]

Application

Aluminum oxide (Alumina) may be used for the removal of peroxides from the dehydration solvent (tetrahydrofuran, THF) in a protocol. Protocol involved the high resolution study of fine brain anatomy of fluorescently labeled mouse brains.[3] It may be used in the fabrication of polycrystalline lithium iodide-Aluminum oxide solid electrolytes. The incorporation of aluminum oxide remarkably increased the conductivity of lithium iodide.[4]
Aluminum oxide (acidic) can be used as an adsorbent for column chromatography.[5] It may be used as an active surface for the acylation of aromatic ethers with carboxylic acids in the presence of trifluoroacetic anhydride under solvent-free conditions.[6]

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

nwg

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Certificats d'analyse (COA)

Lot/Batch Number
BCCL8787
BCCK3646
BCCK9046
BCCG5657
BCCD3970

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Efficient Syntheses of (a-Fluoropropargyl) phosphonate Esters.
Benayoud F, et al.
The Journal of Organic Chemistry, 61(15), 5159-5164 (1996)
A simple, efficient, and selective method for tetrahydropyranylation of alcohols on a solid phase of alumina impregnated with zinc chloride.
Ranu BC and Saha M.
The Journal of Organic Chemistry, 59(26), 8269-8270 (1994)
Micron-scale resolution optical tomography of entire mouse brains with confocal light sheet microscopy.
Silvestri L, et al.
Journal of Visualized Experiments, 80, e50696-e50696 (2013)
Conduction Characteristics of the Lithium Iodide-Aluminum Oxide Solid Electrolytes.
Liang CC.
Journal of the Electrochemical Society, 120(10), 1289-1292 (1973)
Sebastiaan P van Kessel et al.
Nature communications, 10(1), 310-310 (2019-01-20)
Human gut microbiota senses its environment and responds by releasing metabolites, some of which are key regulators of human health and disease. In this study, we characterize gut-associated bacteria in their ability to decarboxylate levodopa to dopamine via tyrosine decarboxylases.
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    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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    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.
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      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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