Properties of potassium
Thermophysical properties for potassium (CAS: 7440-09-7). 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
- AtomsK: 1
- CAS7440-09-7
- FormulaK
- ID7440-09-7
- InChIK
- InChI KeyZLMJMSJWJFRBEC-UHFFFAOYSA-N
- IUPAC Namepotassium
- Molecular Weight (kg)39.0983
- Phases
- PubChem ID5.4622e+6
- SMILES[K]
- Synonyms
Physical Properties
- Acentric factor-0.2028
- Critical pressure (bar)160
- Critical temperature (°C)1949.85
- Critical volume (m³/kmol)0.209
- Dipole moment
- Melting temperature (°C)63.5
- Normal boiling temperature (°C)759
State-dependent Properties
- API gravity39.2214
- Compressibility factor0.00179561
- Density (kg/m³)890.007
- Dynamic viscosity (cP)0
- Enthalpy of vaporization (mass) (kJ)847.181
- Enthalpy of vaporization (molar) (kJ/kmol)3.3123e+4
- 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))29.5608
- Molar volume (m³/kmol)0.0439303
- Parachor2.7413e-5
- Poynting correction factor1.00193
- Prandtl number
- Saturation pressure (bar)3.5964e-11
- Saturation temperature (°C)756.596
- Solubility parameter2.5475e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity0.890882
- Specific heat capacity (kJ/kg·K)0.756063
- Surface tension0.112725
- Thermal conductivity102.503
- 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