Ethanol - Thermophysical Properties
Calculate and reference thermophysical properties of Ethanol (C2H5OH) including density, viscosity, heat capacity, thermal conductivity, and other physical and chemical properties at standard conditions (25°C, 1 bara).
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Property--
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Unit--
Description--
| Property | Value (SI) | Unit (SI) |
|---|---|---|
| Acidity (pKa1) | 15.9 | |
| Autoignition temperature | 636 | K |
| Boiling Point | 351.39 | K |
| Critical density | 5.91 | mol/dm³ |
| Critical Pressure | 6.25 | MPa |
| Critical temperature | 513.9 | K |
| Critical Volume | 169 | cm³/mol |
| Density (gas) at 0.08 bar | 3.15 | mol/m³ |
| Density (liquid) | 17046 | mol/m³ |
| Flammable (gas and liquid) | yes | |
| Flash point | 286 | K |
| Gas constant (individual) - R | 180.5 | J/kg K |
| Gibbs free energy of formation (gas) | -168 | kJ/mol |
| Specific heat capacity, Cp (isobaric) (gas) | 74 | J/mol K |
| Specific heat capacity, Cp (liquid) | 118 | J/mol K |
| Specific heat capacity, Cv (isochoric) (gas) | 65 | J/mol K |
| Specific heat capacity, Cv (liquid) | 100 | J/mol K |
| Heat (enthalpy) of combustion (gas) | 1336.8 | kJ/mol |
| Heat (enthalpy) of formation (gas) | -234 | kJ/mol |
| Heat (enthalpy) of fusion at -173°F/-114°C | 4.9 | kJ/mol |
| Heat (enthalpy) of evaporation | 42.32 | kJ/mol |
| Ionization potential | 10.47 | eV |
| log KOW (Octanol/Water Partition Coefficient) | -0.31 | |
| Melting point | 159.01 | K |
| Molecular Weight | 46.069 | g/mol |
| Solubility in water | 1000 | mg/ml |
| Sound velocity in liquid | 1139 | m/s |
| Sound velocity in gas, at 0.08 bara | 246 | m/s |
| Specific Gravity (gas) (relative to air) | 1.59 | |
| Specific Gravity (liquid) (relative to water) | 0.79 | |
| Specific Heat Ratio (gas) - Cp/Cv | 1.13 | |
| Specific Heat Ratio (liquid) - Cp/Cv | 1.18 | |
| Specific Volume (gas), at 0.08 bar | 0.318 | m³/mol |
| Specific Volume (liquid) | 0.0000587 | m³/mol |
| Standard molar entropy, S° (gas) | 283 | J/mol K |
| Standard molar entropy, S° (liquid) | 160 | J/mol K |
| Surface tension | 21.97 | dynes/cm |
| Thermal Conductivity | 0.167 | W/m K |
| Triple point pressure | 4.3×10⁻¹⁰ | MPa |
| Triple point temperature | 150.00 | K |
| Vapor (saturation) pressure | 0.008 | MPa |
| Viscosity, dynamic (absolute) | 1.074 | cP |
| Viscosity, kinematic | 1.36 | cSt |