Properties of urea
Thermophysical properties for urea (CAS: 57-13-6). 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
- AtomsC: 1, H: 4, N: 2, O: 1
- CAS57-13-6
- FormulaCH4N2O
- ID57-13-6
- InChICH4N2O/c2-1(3)4/h(H4,2,3,4)
- InChI KeyXSQUKJJJFZCRTK-UHFFFAOYSA-N
- IUPAC Nameurea
- Molecular Weight (kg)60.0553
- Phases
- PubChem ID1176
- SMILESC(=O)(N)N
- Synonyms
Physical Properties
- Acentric factor0.62
- Critical pressure (bar)90.5
- Critical temperature (°C)431.85
- Critical volume (m³/kmol)0.218
- Dipole moment3.83
- Melting temperature (°C)133.35
- Normal boiling temperature (°C)353
State-dependent Properties
- API gravity30.765
- Compressibility factor0.00263155
- Density (kg/m³)932.798
- Dynamic viscosity (cP)0
- Enthalpy of vaporization (mass) (kJ)1159.89
- Enthalpy of vaporization (molar) (kJ/kmol)6.9657e+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))70.5335
- Molar volume (m³/kmol)0.0643818
- Parachor3.5272e-5
- Poynting correction factor1.00284
- Prandtl number
- Saturation pressure (bar)9.6475e-5
- Saturation temperature (°C)193.719
- Solubility parameter3.1133e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity0.933716
- Specific heat capacity (kJ/kg·K)1.17448
- Surface tension0.0663087
- Thermal conductivity
- Thermal diffusivity
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)102.154
- Lower flammability limit0.0687306
- Upper flammability limit0.197447
Environmental Properties
- Global warming potential
- Ozone depletion potential