Properties of osmium
Thermophysical properties for osmium (CAS: 7440-04-2). Use the selector below to view properties in different unit systems.
Calculation Conditions
The following state-dependent properties were calculated at these standard conditions.
Temperature
25 °C
Pressure
1.01325 bar
Need properties at a different state? Use our interactive calculator.
Open CalculatorIdentification
- AtomsOs: 1
- CAS7440-04-2
- FormulaOs
- ID7440-04-2
- InChIOs
- InChI KeySYQBFIAQOQZEGI-UHFFFAOYSA-N
- IUPAC Nameosmium
- Molecular Weight (kg)190.23
- Phases
- PubChem ID2.3937e+4
- SMILES[Os]
- Synonyms
Physical Properties
- Acentric factor7.1561e-7
- Critical pressure (bar)9938.9
- Critical temperature (°C)1.6606e+4
- Critical volume (m³/kmol)0.04236
- Dipole moment
- Melting temperature (°C)3033
- Normal boiling temperature (°C)5008
State-dependent Properties
- API gravity-124.432
- Compressibility factor3.4425e-4
- Density (kg/m³)2.2587e+4
- Dynamic viscosity (cP)0
- Enthalpy of vaporization (mass) (kJ)4148.72
- Enthalpy of vaporization (molar) (kJ/kmol)7.8921e+5
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient
- Kinematic viscosity
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))24.7066
- Molar volume (m³/kmol)0.0084221
- Parachor
- Poynting correction factor1.00039
- Prandtl number
- Saturation pressure (bar)3.3194e-148
- Saturation temperature (°C)5984.35
- Solubility parameter2.8760e+5
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity22.6092
- Specific heat capacity (kJ/kg·K)0.129877
- Surface tension
- Thermal conductivity
- Thermal diffusivity
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-273.15
- Lower flammability limit
- Upper flammability limit
Environmental Properties
- Global warming potential
- Ozone depletion potential