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199443

Sigma-Aldrich

Aluminum oxide

greener alternative

standard grade, Brockmann I, activated, basic

Synonym(s):

Alumina

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About This Item

Linear Formula:
Al2O3
CAS Number:
1344-28-1
Molecular Weight:
101.96
EC Number:
215-691-6
MDL number:
MFCD00003424
UNSPSC Code:
12352311
eCl@ss:
38120402
PubChem Substance ID:
329751958
NACRES:
SB.52

Key Documents

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agency

suitable for EPA 1613

Quality Level

100

form

powder

manufacturer/tradename

CAMAG 5016-A-I

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Design for Energy Efficiency
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sustainability

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technique(s)

solid phase extraction (SPE): suitable

impurities

<0.03% Fe2O3
<0.4% Na2O

particle size

~150 mesh

pore size

58 Å pore size

pH

9.5±0.5 ( in H2O)

mp

2040 °C (lit.)

anion traces

chloride (Cl-): none detected
silicate (as SiO2): <0.03%

greener alternative category

Enabling

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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General description

Brockmann aluminum oxides are suitable for column chromatography and adsorptive filtration.
The product is basic activated aluminum oxide (Alumina, Al2O3) having an activity grade Brockman I. The mechanism of formation of protective scales of α-Al2O3 on surfaces of binary M-Al (M = Fe, Ni or Co) alloys at high temperatures has been studied. 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.
We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. Aluminum oxide serves as a multifunctional additive or coating in lithium-ion batteries, helping stabilize electrode–electrolyte interfaces, suppress side reactions, improve thermal stability, and extend cycle life. By enabling safer, longer-lasting cells, it reduces material waste and energy use across the battery lifecycle. Click here for more information.

Application

Aluminum oxide (Alumina) has been 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.
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.

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCG7398
BCCG3176
BCCG0801
BCCD6974
BCCD0138

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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)
Thermoanalytical studies of water on activated alumina, Brockmann I-V,(acid, neutral, basic) from- 60? to+ 700? C.
Hampson JW and Bleam WF.
Thermochimica Acta, 288(1), 179-189 (1996)
Prescott R and Graham MJ.
Oxidation of Metals, 38(3-4), 233-254 (1992)
Chien-Chih Lin et al.
Nanoscale, 5(17), 8090-8097 (2013-07-25)
We demonstrated a promising route for enhancing temperature sensitivity, improving saturation voltage, and reducing power consumption of the MOS(p) tunneling temperature sensors by introducing ultrathin Al2O3 into the dielectric stacks. Detailed illustrations of the working mechanism and device concept are
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