Properties of water
Thermophysical properties for water (CAS: 7732-18-5). 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
- AtomsH: 2, O: 1
- CAS7732-18-5
- FormulaH2O
- ID7732-18-5
- InChIH2O/h1H2
- InChI KeyXLYOFNOQVPJJNP-UHFFFAOYSA-N
- IUPAC Nameoxidane
- Molecular Weight (kg)18.0153
- Phasel
- PubChem ID962
- SMILESO
- Synonyms
Physical Properties
- Acentric factor0.3443
- Critical pressure (bar)220.64
- Critical temperature (°C)373.946
- Critical volume (m³/kmol)0.055948
- Dipole moment1.85
- Melting temperature (°C)0
- Normal boiling temperature (°C)99.9743
State-dependent Properties
- API gravity9.99975
- Compressibility factor7.3854e-4
- Density (kg/m³)997.048
- Dynamic viscosity (cP)0.890022
- Enthalpy of vaporization (mass) (kJ)2441.67
- Enthalpy of vaporization (molar) (kJ/kmol)4.3987e+4
- Gibbs free energy (kJ/kmol)0
- Joule–Thomson coefficient-2.2147e-7
- Kinematic viscosity8.9266e-7
- Molar enthalpy (kJ/kmol)0
- Molar entropy (kJ/(kmol·K))0
- Molar heat capacity (kJ/(kmol·K))75.3275
- Molar volume (m³/kmol)0.0180686
- Parachor9.3656e-6
- Poynting correction factor1.00072
- Prandtl number6.1358
- Saturation pressure (bar)0.0316993
- Saturation temperature (°C)99.9743
- Solubility parameter4.7930e+4
- Specific enthalpy (kJ)0
- Specific entropy (kJ/kg·K)0
- Specific gravity0.998029
- Specific heat capacity (kJ/kg·K)4.18131
- Surface tension0.0719722
- Thermal conductivity0.606516
- Thermal diffusivity1.4548e-7
Safety Properties
- Autoignition temperature (°C)-273.15
- Flash point temperature (°C)-273.15
- Lower flammability limit
- Upper flammability limit0.235
Environmental Properties
- Global warming potential
- Ozone depletion potential