Lanthanum Nitrate

Code	LN—3N	LN—4N	LN—4.5N
Total amount of rare earth oxides %	≥37.	≥37.5	≥37.5
Cerium purity and relative rare earth impurities
La₂O₃/TREO %	≥99.9	≥99.9	≥99.995
CeO₂/TREO %	≤0.08	≤0.0050	≤0.0030
Pr₆O₁₁/TREO %	≤0.01	≤0.0010	≤0.0010
Nd₂O₃/TREO %	≤0.01	≤0.0010	≤0.0010
Sm₂O₃/TREO %	≤0.001	≤0.001	≤0.001
Y₂O₃/TREO %	≤0.001	≤0.001	≤0.001
Non rare earth impurity
Fe₂O₃%	≤0.002	≤0.002	≤0.001
SiO₂%	≤0.01	≤0.005	≤0.005
CaO %	≤0.01	≤0.005	≤0.002
PbO %	≤0.05	≤0.003	≤0.002
SO₂ ⁴^– %	≤0.05	≤0.003	≤0.003

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