Lanthanum Oxide
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QUALITY INDICATOR
REO | ≥99 |
La2O3/TREO | ≥99.999 |
CeO2 | 0.00005 |
Pr6O11 | 0.00003 |
Nd2O3 | 0.00004 |
Sm2O3 | 0.00003 |
Eu2O3 | 0.0003 |
Gd2O3 | 0.00006 |
Tb4O7 | 0.00003 |
Dy2O3 | 0.00002 |
Ho2O3 | 0.00001 |
Er2O3 | 0.00002 |
Tm2O3 | 0.00001 |
Yb2O3 | 0.00002 |
Y2O3 | 0.00010 |
Lu2O3 | 0.00001 |
Fe2O3 | 0.0001 |
CaO | 0.0005 |
PbO | 0.0001 |
Cl— | 0.0050 |
CuO | 0.00005 |
NiO | 0.00005 |
L.O.I | 1 |
La2O3
CAS Number: 1312-81-8
Appearance: White powder
Solubility: soluble in water, moderately soluble in strong mineral acids
Chem. Durability: Highly hygroscopic
Application: Lanthanum oxide is used for melting optical glass (from 5 to 40%), for the manufacture of lenses and prisms used in cinema and photographic equipment, as well as for astronomical purposes. Lanthanum glass is also used for the manufacture of laboratory glassware (heat resistance and acid resistance). Pure lanthanum is almost never used as an alloying metal, using cheaper and more affordable mischmetall.
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