Osmium Reduction

Chemical Formula: Os
Present as:

Osmium (from Greek ὀσμή osme, “smell”) is a chemical element with symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Its alloys with platinum, iridium, and other platinum-group metals are employed in fountain pen nibs, electrical contacts, and other applications where extreme durability and hardness are needed.
Osmium has a blue-gray tint and is the densest stable element, slightly denser than iridium. Calculations of density from the X-ray diffraction data may produce the most reliable data for these elements, giving a value of 22.562±0.009 g/cm3 for iridium versus 22.587±0.009 g/cm3 for osmium.
Osmium has a very low compressibility. It is a hard but brittle metal that remains lustrous even at high temperatures. Major uses of osmium tetroxide are staining specimens for electron microscopy and oxidation of alkenes in organic synthesis.

Get expert advice

Need a little help deciding what to do next?
Reach out to us using the link below.