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It is a pale yellow powder, odorless and tasteless, stable at high temperatures.
Holmium oxide can be used as an additive of yttrium iron and yttrium aluminum garnet and to produce metal holmium.
Material name | Holmium oxide |
Formula | Ho2O3 |
CAS No. | 12055-62-8 |
EINECS NO. | 235-015-3 |
Molecular Weight | 377.86 |
Density | 1.0966g/cm3 Lat 25°C |
Melting point | >100°C(lit.) |
Appearance | pale yellow powder |
Purity/Specification (Ho2O3/REO) | 99.5%-99.99% |
Solubility | Insoluble in water, but soluble in acid and alkali solutions. |
Holmium oxide has a wide range of uses, such as Photoelectric devices,Electronic devices,Gas sensor,Optical coating ect files, the exact application in these areas as following.
Photoelectric devices: Holmium oxide is widely used in the manufacture of optoelectronic devices, such as photodetectors, solar cells, etc.
Electronic devices: Their semiconductor properties can be used to manufacture field effect tubes, power electronic devices, etc.
Gas sensor: Holmium oxide is sensitive to gases such as hydrogen and oxygen and can be used in gas sensors and detectors.
Optical coating: Its high refractive index and transparency can be used to manufacture optical coatings, optical devices and glass materials.
| Holmium Oxide Ho₂O₃ | |||||
| Purity | 4N | 3N5 | 3N | 2N5 | |
| REO%Min. | 99 | 99 | 99 | 99 | |
| Ho²O₃/REO%Min. | 99.99 | 99.95 | 99.9 | 99.5 | |
| Rare earth impurities %Max. | La²O3 | subtotal 0.0010 | subtotal 0.0020 | subtotal 0.020 | subtotal 0.5 |
| CeO₂ | |||||
| Pr⁶011 | |||||
| Nd₂O3 | |||||
| Sm203 | |||||
| EuzO3 | |||||
| Gd₂O3 | |||||
| Tb₄O7 | 0.001 | 0.002 | 0.003 | ||
| Dy²O3 | 0.002 | 0.01 | 0.03 | ||
| ErzO3 | 0.002 | 0.01 | 0.03 | ||
| Tm²03 | 0.001 | 0.002 | 0.003 | ||
| Yb₂O3 | 0.001 | subtotal 0.024 | subtotal 0.032 | ||
| Lu₂O3 | 0.001 | ||||
| Y2O3 | 0.001 | ||||
| Non rare earth impurities %Max. | Fe2O3 | 0.0005 | 0.001 | 0.005 | 0.01 |
| SiO₂ | 0.003 | 0.005 | 0.01 | 0.03 | |
| CaO | 0.002 | 0.005 | 0.01 | 0.03 | |
| Na₂0 | 0.002 | 0.005 | 0.01 | 0.03 | |
| Cr | 0.02 | 0.03 | 0.05 | 0.05 | |
| others | 0.001 | 0.001 | 0.002 | 0.003 | |
| LOJ%Max. | 1 | 1 | 1 | 1 | |
It is a pale yellow powder, odorless and tasteless, stable at high temperatures.
Holmium oxide can be used as an additive of yttrium iron and yttrium aluminum garnet and to produce metal holmium.
Material name | Holmium oxide |
Formula | Ho2O3 |
CAS No. | 12055-62-8 |
EINECS NO. | 235-015-3 |
Molecular Weight | 377.86 |
Density | 1.0966g/cm3 Lat 25°C |
Melting point | >100°C(lit.) |
Appearance | pale yellow powder |
Purity/Specification (Ho2O3/REO) | 99.5%-99.99% |
Solubility | Insoluble in water, but soluble in acid and alkali solutions. |
Holmium oxide has a wide range of uses, such as Photoelectric devices,Electronic devices,Gas sensor,Optical coating ect files, the exact application in these areas as following.
Photoelectric devices: Holmium oxide is widely used in the manufacture of optoelectronic devices, such as photodetectors, solar cells, etc.
Electronic devices: Their semiconductor properties can be used to manufacture field effect tubes, power electronic devices, etc.
Gas sensor: Holmium oxide is sensitive to gases such as hydrogen and oxygen and can be used in gas sensors and detectors.
Optical coating: Its high refractive index and transparency can be used to manufacture optical coatings, optical devices and glass materials.
| Holmium Oxide Ho₂O₃ | |||||
| Purity | 4N | 3N5 | 3N | 2N5 | |
| REO%Min. | 99 | 99 | 99 | 99 | |
| Ho²O₃/REO%Min. | 99.99 | 99.95 | 99.9 | 99.5 | |
| Rare earth impurities %Max. | La²O3 | subtotal 0.0010 | subtotal 0.0020 | subtotal 0.020 | subtotal 0.5 |
| CeO₂ | |||||
| Pr⁶011 | |||||
| Nd₂O3 | |||||
| Sm203 | |||||
| EuzO3 | |||||
| Gd₂O3 | |||||
| Tb₄O7 | 0.001 | 0.002 | 0.003 | ||
| Dy²O3 | 0.002 | 0.01 | 0.03 | ||
| ErzO3 | 0.002 | 0.01 | 0.03 | ||
| Tm²03 | 0.001 | 0.002 | 0.003 | ||
| Yb₂O3 | 0.001 | subtotal 0.024 | subtotal 0.032 | ||
| Lu₂O3 | 0.001 | ||||
| Y2O3 | 0.001 | ||||
| Non rare earth impurities %Max. | Fe2O3 | 0.0005 | 0.001 | 0.005 | 0.01 |
| SiO₂ | 0.003 | 0.005 | 0.01 | 0.03 | |
| CaO | 0.002 | 0.005 | 0.01 | 0.03 | |
| Na₂0 | 0.002 | 0.005 | 0.01 | 0.03 | |
| Cr | 0.02 | 0.03 | 0.05 | 0.05 | |
| others | 0.001 | 0.001 | 0.002 | 0.003 | |
| LOJ%Max. | 1 | 1 | 1 | 1 | |
