Formula: Y2O3
CAS No.: 1314-36-9
Molecular Weight: 225.81
Density: 5.01 g/cm3
Melting point: 2425 celsium degree
Appearance: White powder
Solubility: Insoluble in water, moderately soluble in strong mineral acids
Stability: Slightly hygroscopicMultilingual: YttriumOxid, Oxyde De Yttrium, Oxido Del Ytrio
Yttrium oxide (also known as yttria) is a chemical compound with the formula Y2O3. It is a rare earth oxide and a white solid material with a cubic crystal structure. Yttrium oxide is a refractory material with a high melting point and is resistant to chemical attack. It is used as a material for making phosphors for use in cathode ray tubes and fluorescent lamps, as a dopant in semiconductor devices, and as a catalyst. It is also used in the production of ceramics, particularly alumina-based ceramics, and as an abrasive.
Test Item
|
Standard
|
Results
|
Y2O3/TREO
|
≥99.99%
|
99.999%
|
Main Component TREO
|
≥99.5%
|
99.85%
|
RE Impurities (ppm/TREO)
|
||
La2O3
|
≤10
|
2
|
CeO2
|
≤10
|
3
|
Pr6O11
|
≤10
|
3
|
Nd2O3
|
≤5
|
1
|
Sm2O3
|
≤10
|
2
|
Gd2O3
|
≤5
|
1
|
Tb4O7
|
≤5
|
1
|
Dy2O3
|
≤5
|
2
|
Non—RE Impurities (ppm)
|
||
CuO
|
≤5
|
1
|
Fe2O3
|
≤5
|
2
|
SiO2
|
≤10
|
8
|
Cl—
|
≤15
|
8
|
CaO
|
≤15
|
6
|
PbO
|
≤5
|
2
|
NiO
|
≤5
|
2
|
L.O.I.
|
≤0.5%
|
0.12%
|
Conclusion
|
Comply with above standard.
|