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Holmium Oxide

Holmium Oxide

Category: Rare Earth Oxides

Formula Ho2O3
CAS No. 12055-62-8
Molecular Weight 377.8
6
Appearance Light yellow powder
Solubility Insoluble in water, moderately soluble in strong mineral acids
Stability Slightly hygroscopic

Application: Holmium Oxide is also called Holmia, has specialized uses in ceramics, glass, phosphors and metal halide lamp, and dopant to garnet laser. Holmium can absorb fission-bred neutrons, it is also used in nuclear reactors to keep atomic chain reaction from running out of control.

Standard Specifications

Grade 99.999% 99.99% 99.9% 99%
CHEMICAL COMPOSITION
Ho2O3/TREO (% min.) 99.999 99.99 99.9 99
TREO (% min.) 99 99 99 99
Loss On Ignition (% max.) 0.5 0.5 1 1
Rare Earth Impurities % max. % max. % max. % max.
Tb4O7/TREO
Dy2O3/TREO
Er2O3/TREO
Tm2O3/TREO
Yb2O3/TREO
Lu2O3/TREO
Y2O3/TREO
0.0001
0.0005
0.0005
0.0001
0.0001
0.0001
0.0001
0.0005
0.001
0.005
0.0005
0.0005
0.0005
0.001
0.01
0.03
0.03
0.005
0.005
0.005
0.01
0.1
0.3
0.3
0.1
0.01
0.01
0.05
Non-Rare Earth Impurities % max. % max. % max. % max.
Fe2O3
SiO2
CaO
Cl-
CoO
NiO
CuO

0.0002
0.00
1
0.00
3
0.00
5
0.000
1
0.000
1
0.000
1
0.0005
0.001
0.005
0.005
0.0005
0.0005
0.0005

0.001
0.005
0.005
0.02

0.005
0.02
0.02
0.05

Individual Rare earth including Lanthanum, Cerium, Neodymium, Praseodymium, Samarium, Europium, Gadolinium, Dysprosium, Terbium, Holmium, Erbium, Ytterbium, Lutetium, Thulium, Scandium and Yttrium.

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