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634875

Aluminum oxide

Name: Aluminum oxide
Brand: ALDRICH

single crystal substrate, <0001>

Synonym(s):

Sapphire, Alumina

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About This Item

Linear Formula:

Al₂O₃

CAS Number:

1344-28-1

Molecular Weight:

101.96

PubChem Substance ID:

24882698

eCl@ss:

38120402

UNSPSC Code:

12352303

NACRES:

NA.23

EC Number:

215-691-6

MDL number:

MFCD00003424

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Properties

Quality Level

100

description

Crystallographic D spacing ((0001) - c plane: 2.165 Angstrom), Crystallographic D spacing ((1011) - s plane: 1.961 Angstrom), Crystallographic D spacing ((1040) - m plane: 1.375 Angstrom), Crystallographic D spacing ((1102) - r plane: 1.740 Angstrom), Crystallographic D spacing ((1120) - a plane: 2.379 Angstrom), Crystallographic D spacing ((1123) - n plane: 1.147 Angstrom), single side polished

form

single crystal substrate

composition

Al₂O₃

hardness

9 mohs

reaction suitability

core: aluminum

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

L × W × thickness

10 mm × 10 mm × 0.5 mm

mp

2040 °C (lit.)

greener alternative category

Enabling

semiconductor properties

<0001>

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

Description

General description

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.

thermal expansion = 7.5 × 10^-6 /°C; specific heat = 0.10 cal/°C; thermal conductivity = 46.06 @ 0 °C, 25.12 @ 100 °C, 12.56 @ 400 °C (W/m,K); dielectric constant = ~9.4 @ 300 K at A axis, ~11.58 @ C axis; loss tangent at 10 GHz < 2 × 10^-5 at A axis, 5 × 10^-6 at C axis

Features and Benefits

Common substrate for III-V nitrides as well as many other epitaxial films.

Physical form

Crystalline, hexagonal (a = 4.758 Å, c = 12.992)

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Storage Class

13 - Non Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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[Au5Mes5]: improved gram-scale synthesis and its use as a convenient precursor for halide-free supported gold nanoparticles.

G Siddiqi et al.

Dalton transactions (Cambridge, England : 2003), 44(32), 14349-14353 (2015-07-23)

A simple one-step and gram-scale synthesis of [Au5Mes5] from AuCl3 was developed, and this molecular precursor was used to generate Au nanoparticles on SiO2 and Al2O3. While [Au5Mes5] does not react with surface silanols and is only physisorbed, its incipient

Performance enhancement of metal-oxide-semiconductor tunneling temperature sensors with nanoscale oxides by employing ultrathin Al2O3 high-k dielectrics.

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

Where bio meets nano: the many uses for nanoporous aluminum oxide in biotechnology.

Colin J Ingham et al.

Biotechnology advances, 30(5), 1089-1099 (2011-08-23)

Porous aluminum oxide (PAO) is a ceramic formed by an anodization process of pure aluminum that enables the controllable assembly of exceptionally dense and regular nanopores in a planar membrane. As a consequence, PAO has a high porosity, nanopores with

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Global Trade Item Number

SKU	GTIN
634875-1EA	04061832722184
634875-5EA	04061832722191