Properties of octadecane
Thermophysical properties for octadecane (CAS: 593-45-3). 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
- AtomsC: 18, H: 38
- CAS593-45-3
- FormulaC18H38
- ID593-45-3
- InChIC18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H3
- InChI KeyRZJRJXONCZWCBN-UHFFFAOYSA-N
- IUPAC Nameoctadecane
- Molecular Weight (kg)254.494
- Phases
- PubChem ID1.1635e+4
- SMILESCCCCCCCCCCCCCCCCCC
- Synonyms
Physical Properties
- Acentric factor0.8087
- Critical pressure (bar)12.9
- Critical temperature (°C)473.85
- Critical volume (m³/kmol)1.189
- Dipole moment0
- Melting temperature (°C)28
- Normal boiling temperature (°C)316
State-dependent Properties
- API gravity51.0936
- Compressibility factor0.0119814
- Density (kg/m³)868.195
- Dynamic viscosity (cP)0
- Enthalpy of vaporization (mass) (kJ)343.898
- Enthalpy of vaporization (molar) (kJ/kmol)8.7520e+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))485.6
- Molar volume (m³/kmol)0.29313
- Parachor1.3629e-4
- Poynting correction factor1.01353
- Prandtl number
- Saturation pressure (bar)2.6229e-7
- Saturation temperature (°C)315.15
- Solubility parameter1.6084e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity0.86905
- Specific heat capacity (kJ/kg·K)1.9081
- Surface tension0.0279923
- Thermal conductivity
- Thermal diffusivity
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-273.15
- Lower flammability limit0.0296651
- Upper flammability limit0.291536
Environmental Properties
- Global warming potential
- Ozone depletion potential