Properties of niobium
Thermophysical properties for niobium (CAS: 7440-03-1). 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
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Open CalculatorIdentification
- AtomsNb: 1
- CAS7440-03-1
- FormulaNb
- ID7440-03-1
- InChINb
- InChI KeyGUCVJGMIXFAOAE-UHFFFAOYSA-N
- IUPAC Nameniobium
- Molecular Weight (kg)92.9064
- Phases
- PubChem ID2.3936e+4
- SMILES[Nb]
- Synonyms
Physical Properties
- Acentric factor7.1561e-7
- Critical pressure (bar)1.0418e+4
- Critical temperature (°C)1.7631e+4
- Critical volume (m³/kmol)0.04287
- Dipole moment
- Melting temperature (°C)2477
- Normal boiling temperature (°C)4741
State-dependent Properties
- API gravity-112.731
- Compressibility factor4.4311e-4
- Density (kg/m³)8570.04
- Dynamic viscosity (cP)0
- Enthalpy of vaporization (mass) (kJ)9008.52
- Enthalpy of vaporization (molar) (kJ/kmol)8.3695e+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))24.7527
- Molar volume (m³/kmol)0.0108408
- Parachor1.5435e-5
- Poynting correction factor1.0005
- Prandtl number
- Saturation pressure (bar)1.1537e-157
- Saturation temperature (°C)6344.02
- Solubility parameter2.6008e+5
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity8.57847
- Specific heat capacity (kJ/kg·K)0.266426
- Surface tension2.44488
- Thermal conductivity53.7
- 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