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希土類
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(酸化)
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プラセオジム
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セリウム
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ランタン
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ネオジム
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イットリウム
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イッテルビウム
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化学式
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Pr6O11
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CeO2
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La2O3
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Nd2O3
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Y2O3
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Yb2O3
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Pr6O11
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≧99.90
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≦0.003
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≦0.0001
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≦0.03
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≦0.0005
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CeO2
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≦0.02
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≧99.99
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≦0.0001
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≦0.01
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≦0.0001
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La2O3
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≦0.005
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≦0.001
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≧99.999
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≦0.01
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≦0.0002
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Nd2O3
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≦0.05
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≦0.002
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≦0.0001
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≧99.9
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≦0.0003
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Y2O3
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≦0.005
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≦0.001
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≦0.0001
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≦0.01
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≧99.99
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Yb2O3
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≦0.0001
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≧99.9
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Sm2O3
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≦0.005
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≦0.001
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≦0.0005
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≦0.02
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≦0.0003
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Tb4O7
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≦0.0001
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≦0.0005
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Eu2O3
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≦0.0001
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Gd2O3
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≦0.0003
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Dy2O3
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≦0.0003
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総量+Y2O3
≦1
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Ho2O3
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≦0.0001
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Er2O3
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≦0.0001
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Tm2O3
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≦0.0001
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Lu2O3
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≦0.0001
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Fe2O3
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≦0.005
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≦0.001
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≦0.0001
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≦0.002
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≦0.0003
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≦0.1
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SiO2
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≦0.01
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≦0.05
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≦0.005
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≦0.01
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≦0.002
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≦0.05
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CaO
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≦0.01
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≦0.05
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≦0.005
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≦0.01
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≦0.001
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≦0.15
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CuO
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≦0.0002
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≦0.0005
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NiO
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≦0.0001
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≦0.0005
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PbO
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≦0.001
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≦0.0005
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Cl
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≦0.03
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≦0.02
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≦0.005
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Loss on iqnition
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≦1
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≦1
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≦0.5
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≦1
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≦0.8
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≦1
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