Lanthanum Oxide CAS 1312-81-8 La2O3, also called Lanthana, high purity Lanthanum Oxide (99.99% to 99.999%)
-Be applied in making special optical glasses to improves the alkali resistance of glass.
-Used in La-Ce-Tb phosphors for fluorescent lamps and making special optical glasses, such as infrared-absorbing glass, as well as camera and telescope lenses.
-Low grade of Lanthanum Oxide is widely used in ceramics and FCC catalyst, and also as raw material for Lanthanum Metal production.
-Lanthanum Oxide is also used as a grain growth additive during the liquid phase sintering of Silicon Nitride and Zirconium Diboride.
Specification
Code |
3N |
4N |
4.5N |
TREO% |
≥97 |
≥98 |
≥98 |
La purity and relative rare earth impurities |
|||
La2O3/TREO % |
≥99.9 |
≥99.99 |
≥99.995 |
CeO2/TREO % |
≤0.05 |
≤0.007 |
≤0.004 |
Pr6O11/TREO % |
≤0.01 |
≤0.001 |
≤0.0005 |
Nd2O3/TREO % |
≤0.01 |
≤0.001 |
≤0.0005 |
Sm2O3/TREO % |
≤0.01 |
≤0.001 |
≤0.0005 |
Y2O3/TREO % |
≤0.01 |
≤0.001 |
≤0.0005 |
Non rare earth impurity |
|||
Fe2O3 % |
≤0.005 |
≤0.003 |
≤0.0003 |
SiO2 % |
≤0.02 |
≤0.015 |
≤0.005 |
CaO % |
≤0.05 |
≤0.01 |
≤0.005 |
Na % |
≤0.005 |
≤0.003 |
≤0.002 |
MnO2 % |
≤0.003 |
≤0.002 |
≤0.001 |
AL2O3 % |
≤0.01 |
≤0.007 |
≤0.005 |
PbO % |
≤0.01 |
≤0.005 |
≤0.003 |
Cl- % |
≤0.1 |
≤0.06 |
≤0.04 |
Radioactive |
1Bq/g |
||
1000ºC 2hr |
≤ 3.0 |
≤ 2.0 |
≤2.0 |
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