· CAS:7440-60-0
· Molecular Formula: Ho
· Purity: 99.99%
· EINECS No.:231-169-0
Package Class:Vacuum Bag or with argon protection sealed
High Purity Holmium Metal (Ho)
Characteristic
Holmium is a chemical element with the symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a rare-earth element. Like dysprosium, it is a metal that absorbs neutrons produced by nuclear fission.Stable in dry air at room temperature, easily oxidized in humid air and high temperature.
Features： Lump
Melting point： 1734 K (1461 °C, 2662 °F)
Boiling point： 2873 K (2600 °C, 4712 °F)
Density (near r.t.)： 8.79 g/cm3
when liquid (at m.p.)： 8.34 g/cm3
Heat of fusion： 17.0 kJ/mol
Heat of vaporization： 251 kJ/mol
Molar heat capacity： 27.15 J/(mol·K)
Chemical Composition
Rare Earth Impurity(≤) | Ho/RE | ≥99.9% |
Item | La/RE | Ce/RE | Pr/RE | Nd/RE | Sm/RE | Eu/RE | Gd/RE |
Content(μm/g) | 5.21 | 0.70 | 0.80 | 0.10 | 0.21 | 0.45 | 0.27 |
Item | Tb/RE | Dy/RE | Er/RE | Tm/RE | Yb/RE | Lu/RE | Y/RE |
Content(μm/g) | 0.24 | 3.25 | 4.10 | 2.80 | 1.43 | 10.52 | 4.30 |
Non-Rare Earth Impurity(≤) | RE | ≥99.5% |
Item | Al | Fe | Ca | Si | Mg | C | Ni |
Content(μm/g) | 27.00 | 145.00 | 75.00 | 85.00 | 3.50 | 54.23 | 1.90 |
Application
Holmium has the highest magnetic permeability of any element and therefore is used for the polepieces of the strongest static magnets. Because holmium strongly absorbs neutrons, it is also used as a burnable poison in nuclear reactors.Holmium-doped fibers can be used to make fiber lasers, fiber amplifiers, fiber sensors, etc.
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