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1.01095

Aluminum oxide

(anhydrous (γ-aluminia)), Technipur®

Synonim(y):

Alumina

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Informacje o tej pozycji

Wzór liniowy:
Al2O3
Numer CAS:
1344-28-1
Masa cząsteczkowa:
101.96
UNSPSC Code:
12352311
NACRES:
NA.21
MDL number:
MFCD00003424
eCl@ss:
38120507
Informacje o cenach i dostępności nie są obecnie dostępne.
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Quality Segment

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

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 registered trademark of Merck KGaA, Darmstadt, Germany
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Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

Klasa składowania

11 - Combustible Solids

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Certyfikaty analizy (CoA)

Lot/Batch Number

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Questions

  1. What is the particle size distribution? is this a gamma alumina? Do you sell a gamma-alumina with a d50 in the range 20 to 50 µm?

    1 answer

    1. The particle size distribution for this item is listed on the lot specific Certificate of Analysis as follows:
      Particles > 0.2 mm: ≤ 28?%
      Particles > 0.063 mm: ≥ 72?%
      Particles < 0.063 mm: ≤ 28?%

      Currently, there is not another γ-alumina product offered with a d50 range of 20 to 50 µm.

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