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199966

Sigma-Aldrich

Aluminum oxide

activated, acidic, Brockmann I

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Synonym(s):
Alumina
Linear Formula:
Al2O3
CAS Number:
1344-28-1
Molecular Weight:
101.96
EC Number:
215-691-6
MDL number:
MFCD00003424
eCl@ss:
38120402
PubChem Substance ID:
329751965
NACRES:
SB.52

grade

Brockmann I
activated
standard grade

Quality Level

200

form

powder

manufacturer/tradename

CAMAG 504-C-I

technique(s)

ion chromatography: suitable

impurities

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

particle size

50-300 mesh

pore size

58 Å pore size

pH

4.5±0.5 ( in H2O)

mp

2040 °C (lit.)

anion traces

chloride (Cl-): ≤0.14 (mval/g)

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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This Item
199443199974799319
Aluminum oxide activated, acidic, Brockmann I

Sigma-Aldrich

199966

Aluminum oxide

Aluminum oxide activated, basic, Brockmann I

Sigma-Aldrich

199443

Aluminum oxide

Aluminum oxide activated, neutral, Brockmann I

Sigma-Aldrich

199974

Aluminum oxide

Aluminum oxide activated, neutral, Brockmann I, free-flowing, Redi-Dri&#8482;

Sigma-Aldrich

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Aluminum oxide

form

powder

form

powder

form

powder

form

powder

manufacturer/tradename

CAMAG 504-C-I

manufacturer/tradename

CAMAG 5016-A-I

manufacturer/tradename

CAMAG 507-C-I

manufacturer/tradename

CAMAG 507-C-I

technique(s)

ion chromatography: suitable

technique(s)

solid phase extraction (SPE): suitable

technique(s)

ion chromatography: suitable

technique(s)

ion chromatography: suitable

impurities

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

impurities

<0.03% Fe2O3, <0.4% Na2O

impurities

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

impurities

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

particle size

50-300 mesh

particle size

~150 mesh

particle size

40-160 μm

particle size

50-300 mesh

General description

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. 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.

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. 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.
Aluminum oxide (acidic) can be used as an adsorbent for column chromatography. 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.

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Ranu BC and Saha M.
The Journal of Organic Chemistry, 59(26), 8269-8270 (1994)
Efficient Syntheses of (a-Fluoropropargyl) phosphonate Esters.
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The Journal of Organic Chemistry, 61(15), 5159-5164 (1996)
Micron-scale resolution optical tomography of entire mouse brains with confocal light sheet microscopy.
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Conduction Characteristics of the Lithium Iodide-Aluminum Oxide Solid Electrolytes.
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