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α-Al₂O₃ High-purity Ultrafine Powder

Alumina is white powder, main component of bauxite, and has different crystals. Stable crystals are α-Al2O3 and γ-Al2O3. α-Al2O3 is hexagonal crystal, insoluble in water
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Product description
Parameters

Molecular formula Al2O3

Molecular Weight 101.96

Chemical Name Aluminium Oxide

Einecs No. 215-691-6

Cas No. 1344-28-1

 

Specifications

 

Parameters

Chemson-998MF

Chemson-868MF

Chemson-100MF

Appearance

White Powder

White Powder

White Powder

Crystal

α

α

α

Purity, %

99.99

99.95

99.9

D10，μm

0.2

0.2

0.2

D50，μm  

0.40~1.0

0.45~1.0

0.45~1.0

D90，μm

3

3

3

Loose Density, g/cm3

0.35~0.55

0.35~0.55

0.35~0.55

Tap Density, g/cm3

1.0~1.35

1.0~1.35

1.0~1.35

BET, m2/g

4.0~9.0

4.0~9.0

4.0~9.0

Moisture, ppm ≤

3500

5500

6000

PH

6.5~9.0

6.0~9.0

6.0~9.0

Impurity Element Content, ppm≤

Iron (Fe)

35

50

100

Sodium (Na)

30

200

300

Sodium (Ca)

20

100

200

Potassium (K)

10

50

100

 

Characteristics Alumina is white powder, main component of bauxite, and has different crystals. Stable crystals are α-Al2O3 and γ-Al2O3. α-Al2O3 is hexagonal crystal, insoluble in water, acids and alkalis, and traditionally called corundum. The melting point of α-Al2O3 is 2015±15℃, density 3.965g/cm3 and hardness 8.8. γ-Al2O3 is cubic crystal, typical amphoteric oxide, insoluble in water, but soluble in acids and alkalis.

 

Applications Widely used as ceramic substrate, grinding ball, flexibilizer of zirconia grinding ball, electronic packaging material, raw material of manufacturing aluminium nitride by carbothermal reduction method, filler for heat-conducting engineering plastics, precision polishing material, advanced refractory, auto sparking plug, inorganic membrane, coating or electrode material of lithium battery and biological ceramics etc. functional ceramics and structural materials.

 

Packaging Coextruded paper bags lined with plastic film, net weight 25Kgs/bag.

 

Storage Store in a cool, dry, well-ventilated area away from sunlight.

Keyword:
Alumina
Al2O3
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电话

Hotline:

021-65726586

地址

Address:

Rm. 504, No.1398, PingLiang Rd.,Yangpu District, Shanghai, China 

About us

The company insists on independent innovation, and has obtained a number of scientific research achievements and invention patents in the fields of rubber chemicals and ultrafine materials.

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