Lanthanum Oxide

Formula: La₂O₃
Nol.wt.: 325.8
CAS: 1312-81-8
Appearance: White powder
Uses: Mainly used for manufacturing precision optical glass and optical fibers. Also used in the electronics industry as ceramic capacitors and piezoelectric ceramic additives. It is also used as a raw material for the production of lanthanum boride and as a catalyst for petroleum separation and refining.

Code	LO-3N	LO-4N	LO-4.5N
Total amount of rare earth oxides %	≥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%	≤0.01	≤0.005	≤0.005
SiO₂%	≤0.02	≤0.015	≤0.01
CaO %	≤0.08	≤0.05	≤0.03
Na %	≤0.02	≤0.01	≤0.01
MnO₂%	≤0.01	≤0.005	≤0.005
AL₂O₃ %	≤0.01	≤0.007	≤0.005
PbO %	≤0.01	≤0.005	≤0.003
Cl^–%	≤0.08	≤0.06	≤0.05
放射性（Radioactive）	1Bq/g
灼减: L.O.I(1000℃ 2hr)	≤ 3.0	≤ 2.0	≤2.0

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