Merck
All Photos(1)

1.01095

Sigma-Aldrich

Aluminum oxide

(anhydrous (γ-aluminia)), Technipur

Synonym(s):
Alumina
Linear Formula:
Al2O3
CAS Number:
Molecular Weight:
101.96
MDL number:

Quality Level

pH

5 (100 °C, 50 g/L in H2O, suspension)

bp

>2980 °C/1013 hPa

mp

2040 °C (lit.)

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Aluminum oxide is an amphoteric oxide of aluminum. It is also known as alumina. It is widely used in abrasives, refractories, electronics, heat-resistant fibers, ceramics, and glass industries due to its wide availability, high thermal stability, and melting point as well as excellent strength and hardness. Alumina distinguishes itself from many composite materials due to its outstanding mechanical, chemical, and thermal properties.

Application

Aluminum oxide (Al2O3) is widely used as an electrical insulator because of its high ionic inter-atomic bonds, excellent thermal resistive properties, and chemical stability. In electronic and microelectronic applications, Al2O3 is used as a substrate for integrated circuits, as well as high-temperature and corrosive-resistant coating materials. Being a dielectric material,Al2O3 possesses a high breakdown strength (300–700 MV m-1) and relatively large bandgap (∼ 9Ev). Therefore it is a potential candidate for use in dielectric capacitors. It is also used in spark plug insulators, micro-electric substrates, and insulating heatsinks.

In plastic and rubber industries, modified Al2O3 is used as a reinforcing filler to improve the rheological and mechanical properties of the composites.

Legal Information

Technipur is a trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Quality

Enter Lot Number to search for Certificate of Quality (COQ).

More Documents

SDS

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service