Grade |
99.999% |
99.99% |
99.9% |
99% |
CHEMICAL COMPOSITION |
||||
La2O3/TREO (% min.) |
99.999 |
99.99 |
99.9 |
99 |
TREO (% min.) |
45 |
45 |
45 |
45 |
Rare Earth Impurities |
ppm max. |
ppm max. |
% max. |
% max. |
CeO2/TREO
Pr6O11/TREO
Nd2O3/TREO
Sm2O3/TREO
Eu2O3/TREO
Gd2O3/TREO
Y2O3/TREO |
5
5
2
2
2
2
5 |
50
50
10
10
10
10
50 |
0.05
0.02
0.05
0.01
0.001
0.001
0.01 |
0.5
0.1
0.1
0.1
0.1
0.1
0.1 |
Non-Rare Earth Impurities |
ppm max. |
ppm max. |
% max. |
% max. |
Fe2O3
SiO2
CaO
CoO
NiO
CuO
MnO2
Cr2O3
CdO
PbO |
10
50
100
3
3
3
3
3
5
10 |
50
100
100
5
5
3
5
3
5
50 |
0.01
0.05
0.2 |
0.02
0.05
0.5 |