| Properties |
Method |
|
Crystal Form
|
alpha-Al2O3
|
Powder XRD
|
|
Surface Area (m2/g)
|
14.5 ± 1
|
BET
|
|
Average Particle Size (µm)
|
0.2 ± 0.05
|
Sedigraph
|
|
Bulk Density
|
Loose (g/cc)
|
0.9 ± 0.1
|
JIS
|
|
Tapped (g/cc)
|
1.0 ± 0.1
|
JIS
|
|
Pressed (g/cc)
|
2.25 ± 0.1
|
Molding pressure: 1 ton/cm2
|
|
Fired Density (g/cc)
|
> 3.95
|
Fired for 1 h @ 1350°C in air
|
|
Impurities
|
Na (ppm)
|
< 15
|
Flame Spectroscopy
|
|
K (ppm)
|
< 10
|
Flame Spectroscopy
|
|
Fe (ppm)
|
< 20
|
ICP emission spectrophotometry
|
|
Ca (ppm)
|
< 5
|
ICP emission spectrophotometry
|
|
Mg (ppm)
|
< 5
|
ICP emission spectrophotometry
|
|
Si (ppm)
|
< 25
|
ICP emission spectrophotometry
|
|
Purity (Al2O3 %)
|
> 99.99
|
Excluding ignition loss
|
