Looking for something?

If you do not see anything that suits your needs, please get in touch with your requirements.

Custom Enquiry
Os 3-6mm Pieces 99.9% PureOsmium

Osmium Os,

Purity 99.95%


Osmium-Ruthenium Os-Ru,

Available in various ratios wt% or at%, Purity 99.95%

Os TRG 50.8mm dia. x 3mm Tk 99.99% PureDensity >90%Osmium
Symbol Os
Atomic number 76
No. of naturally occurring isotopes 7
Atomic weight 190.2
Electronic configuration [Xe]4fJ45d66s2
Metal radius(12-coordinate)/pm 135
Ionic radius(4-coordinate)/pm VIII 39
Ionic radius(6-coordinate)/pm VII 52.5
Ionic radius(6-coordinate)/pm VI 54.5
Ionic radius(6-coordinate)/pm V 57.5
Ionic radius(6-coordinate)/pm IV 63
Density (20°C)/gcm-3 22.57
Melting point / °C 3045(+/-30)
Boiling point / °C 5025(+/-100)
ΔHfus/kJmol-1 31.7
ΔHvap/kJmol-1 738
ΔHf(monoatomic gas)/kJmol-1 791 (+/-13)
Electrical resistivity
(20°C)/μohm cm 8.12
Electronegativity χ 2.2
Ionization energy/kJmol-1 I 840
Ionization energy/kJmol-1 II 1600
Ionization energy/kJmol-1 III 2400