High Purity Osmium
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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

Symbol:

Os

Atomic Number:

76

Atomic Weight:

190.2

Density:

22.57 gm/cc

Melting Point:

3045 oC

Boiling Point:

5027 oC

Thermal Conductivity:

-

Electrical Resistivity:

9.5 microhm-cm @ 20 oC

Electronegativity:

2.2 Paulings

Specific Heat:

0.03127 Cal/g/K @ 25 oC

Heat of Vaporization:

162 K-Cal/gm atom at 5027 oC

Heat of Fusion:

7.0 Cal/gm mole

 

TYPICAL ANALYSES

Impurities in ppm

Material / Purity:

3N7

Ca 50
Mg 50
Si 10
Cu 10
Na 10

 

OSMIUM POWDER, SHOT, PELLETS, & INGOT

Material

Purity

Osmium Powder-60 Mesh 2N8, 3N
Osmium Powder-325 Mesh 2N8, 3N
Osmium Sponge 2N8, 3N
Osmium Shot 3-6mm  2N8, 3N

Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram.

 

OSMIUM COMPOUNDS

Material

Purity

Osmium Chloride OsCl4  -325 Mesh 3N5, 5N
Osmium Chloride Hydrate OsCl3-xH2O  -325 Mesh 3N5, 5N
Osmium Oxide OsO2  -325 Mesh 3N5
Osmium Oxide OsO4  -325 Mesh 3N5
Potassium Hexabromoosmate K2OsBr6  -325 Mesh 3N5, 5N
Potassium Hexachloroosmate K2OsCl6  -325 Mesh 3N5, 5N
Sodium Hexabromoosmate Na2OsBr6  -325 Mesh 3N5, 5N
Sodium Hexachloroosmate Na2OsCl6  -325 Mesh 3N5, 5N

Compounds are packaged to order and sold by the gram or kilogram.

 

Material Safety Data Sheet - MSDS
Osmium MSDS
Technical Data Sheets
Understanding Mesh Sizes
 
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