Properties of tantalum
Thermophysical properties for tantalum (CAS: 7440-25-7). 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
- AtomsTa: 1
- CAS7440-25-7
- FormulaTa
- ID7440-25-7
- InChITa
- InChI KeyGUVRBAGPIYLISA-UHFFFAOYSA-N
- IUPAC Nametantalum
- Molecular Weight (kg)180.948
- Phases
- PubChem ID2.3956e+4
- SMILES[Ta]
- Synonyms
Physical Properties
- Acentric factor7.1561e-7
- Critical pressure (bar)1.1334e+4
- Critical temperature (°C)1.9628e+4
- Critical volume (m³/kmol)0.0438
- Dipole moment
- Melting temperature (°C)3017
- Normal boiling temperature (°C)5455
State-dependent Properties
- API gravity-122.076
- Compressibility factor4.5098e-4
- Density (kg/m³)1.6400e+4
- Dynamic viscosity (cP)0
- Enthalpy of vaporization (mass) (kJ)5139.1
- Enthalpy of vaporization (molar) (kJ/kmol)9.2991e+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))25.2995
- Molar volume (m³/kmol)0.0110334
- Parachor
- Poynting correction factor1.00049
- Prandtl number
- Saturation pressure (bar)4.3420e-176
- Saturation temperature (°C)7041.66
- Solubility parameter2.7727e+5
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity16.4161
- Specific heat capacity (kJ/kg·K)0.139816
- Surface tension
- Thermal conductivity57.5
- 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