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Lanthanum Oxide La2O3,
Properties
Molecular formula La2O3
Molar mass 325.81 g/mol
Appearance White powder, hygroscopic
Density 6.51 g/cm3, solid
Melting point 2315 'C (2588 K)
Boiling point 4200 'C (4500 K)
Solubility in water Insoluble
CAS No.: 1312-81-8
spec typical
TREO: 97% min. 98.5%
La2O3/TREO: 99.9% min. 99.95%
CeO2/ TREO: 0.025% max. 0.01%
Pr6O11/TREO: 0.025% max. 0.01%
Nd2O3/TREO: 0.015% max. 0.01%
Sm2O3/TREO: 0.02% max. 0.003%
Y2O3/TREO: 0.01% max. 0.001%
Fe2O3: 0.02% max. 0.008%
CaO: 0.20% max. 0.07%
Cl: 0.10% max. 0.06%
SiO2: 0.03% max. 0.03%
L.O.I.: 3% max. 1.2%
|
ITEM |
SPEC |
RESULT |
ITEM |
SPEC |
RESULT |
|
TREO |
98% min. |
99.33% |
Indium |
25ppm max. |
10 ppm |
|
La2O3/TREO |
99.99%min |
99.999% |
Cobalt |
25ppm max. |
10 ppm |
|
CeO2 /TREO |
25ppm max. |
3 ppm |
Nickel |
25ppm max. |
5 ppm |
|
Pr6O11/TREO |
10ppm max. |
3 ppm |
Manganese |
25ppm max. |
10 ppm |
|
Nd2O3/TREO |
10ppm max. |
2 ppm |
Scandium |
25ppm max. |
5 ppm |
|
Sm2O3/TREO |
10ppm max. |
2 ppm |
Barium |
12.5ppm max. |
10 ppm |
|
Y2O3/TREO |
10ppm max. |
2 ppm |
Chrome |
12.5ppm max. |
5 ppm |
|
Eu2O3/TREO |
10ppm max. |
1 ppm |
Strontium |
12.5ppm max. |
5 ppm |
|
Ga2O3/TREO |
10ppm max. |
1 ppm |
Vanadium |
10ppm max. |
5 ppm |
|
Description |
White powder |
White powder |
Beryllium |
10ppm max. |
5 ppm |
|
Tellurium |
10ppm max. |
5 ppm |
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Insoluble substances |
0.1% max. |
0.05% |
Aluminium |
100ppm max. |
56 ppm |
|
Identification test For Lanthanum(by chemical) |
Should be positive |
positive |
Calcium |
500ppm max. |
35 ppm |
|
Chloride: |
0.07% max. |
0.016% |
Silicon |
100ppm max. |
42 ppm |
|
L.O.I.: |
1.0% max. |
0.49% |
Iron |
5ppm max. |
1.5 ppm |
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|
Heavy metals |
20ppm max. |
2.0 ppm |
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