REO

≥66.09

≥65.76

La2O3/REO

≥99.99

≥99.90

Relative purity of rare earth   (wt﹪)

CeO2/TREO

≤0.0015

resultant≤1.0

Pr6O11/TREO

≤0.0015

Nd2O3/TREO

≤0.0010

Sm2O3/TREO

≤0.0010

Y2O3/TREO

≤0.0010

Eu2O3/TREO

resultant≤0.0040

Gd2O3/TREO

Tb4O7/TREO

Dy2O3/TREO

Ho2O3/TREO

Er2O3/TREO

Tm2O3/TREO

Yb2O3/TREO

Lu2O3/TREO

Non-rare earth impurity (wt﹪)

Fe2O3

≤0.0010

≤0.0030

SiO2

≤0.0030

≤0.0050

CaO

≤0.0010

≤0.0030

CuO

≤0.0010

≤0.0030

NiO

≤0.0010

≤0.0020

PbO

≤0.0010

≤0.0020

Al2O3

≤0.0010

≤0.0020

MnO2

≤0.0010

≤0.0020

MgO

≤0.0010

≤0.010

Na2O

≤0.0010

≤0.010

K2O

≤0.0010

≤0.010

NH4+

≤0.050

≤0.10

water insoluble

≤0.01

≤0.05

water

≤0.5

≤1.0