Osmium
MATERIAL OVERVIEW
Characteristics: Hard white metal of the platinum group. On heating in air it gives off poisonous fume of osmium tetroxide. Insoluble in acids and aqua regia. Osmium is attacked by fused alkalies. It has the highest specific gravity and melting point of the platinum metals. It is metallurgically unworkable.
Hazard: Irritant to skin.
Derivation: Occurs with platinum from which it is recovered during the purification process. Also occurs with iridium as a natural alloy, iridosmine.
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GENERAL PROPERTIES
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Symbol: |
Os |
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Atomic Number: |
76 |
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Atomic Weight: |
190.2 |
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Density: |
22.57 gm/cc |
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Melting Point: |
3045 oC |
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Boiling Point: |
5027 oC |
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Thermal Conductivity: |
- |
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Electrical Resistivity: |
9.5 microhm-cm @ 20 oC |
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Electronegativity: |
2.2 Paulings |
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Specific Heat: |
0.03127 Cal/g/K @ 25 oC |
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Heat of Vaporization: |
162 K-Cal/gm atom at 5027 oC |
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Heat of Fusion: |
7.0 Cal/gm mole |
TYPICAL ANALYSES - Impurities in ppm
|
Material / Purity: |
3N5 |
| Fe | 20 |
| Ir | 10 |
| Pd | 10 |
| Pt | 10 |
| Rh | 10 |
| Si | 20 |
OSMIUM POWDER, SHOT, PELLETS, & INGOT
|
Material |
Purity |
| Osmium Powder-16 Mesh | 3N5 |
| Osmium Powder-325 Mesh | 3N5 |
| Osmium Sponge | 3N5 |
| Osmium Shot |
3N5 |
Powder, sponge and are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
OSMIUM COMPOUNDS
|
Material |
Purity |
| Osmium Oxide OsO2 -325 Mesh | 3N5 |
| Potassium Hexachloroosmate K2OsCl6 -325 Mesh | 4N, 5N |
Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
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