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Merck

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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:
Masa cząsteczkowa:
101.96
UNSPSC Code:
12352311
NACRES:
NA.21
MDL number:
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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

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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Ta pozycja
934062229423202606
mp

2040 °C (lit.)

mp

2040 °C (lit.)

mp

2040 °C (lit.)

mp

2040 °C (lit.)

bp

>2980 °C/1013 hPa

bp

-

bp

-

bp

-

pH

5 (100 °C, 50 g/L in H2O, suspension)

pH

-

pH

-

pH

-

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

100


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flash_point_f

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Klasa składowania

11 - Combustible Solids



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Odwiedź Bibliotekę dokumentów



Preparation and characterisation of high performance rubber vulcanizates loaded with modified aluminium oxide
El-Sabbagh SH, et al.
Pigment & Resin Technology, 35(3), 119-131 (2006)
Ruys AJ
Alumina Ceramics: Biomedical and Clinical Applications (2019)
Enhancement of properties of red iron oxide ? aluminium oxide solid solutions anticorrosive pigments
Ahmed NM and Selim MM
Pigment & Resin Technology, 34(5), 256-264 (2005)



Numer pozycji handlu globalnego

SKUNUMER GTIN
101095905004022536015835
101095100004022536015828

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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