lanthanum oxide
lanthanum oxide
1. CAS:1312-81-8
2. Formula:La2O3
3. Molecular Weight:325.82
4. Density:6.51 g/cm3
5. Melting Point:2315ºC
6. Appearance:White powder
7. Solubility:Insoluble in water,moderately soluble in strong mineral acids
5: Lanthanum Oxide is also used as a grain growth additive during the liquid phase sintering of Silicon Nitride and Zirconium Diboride.
Code | LC-3N | LC-4N | LC-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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