Heavy Water - Thermophysical Properties
Thermodynamic properties of heavy water (D2O) including density, melting temperature, boiling temperature, latent heat of fusion, latent heat of evaporation, critical temperature, and other key properties.
Heavy Water (D2O) Thermophysical Properties
Heavy water (deuterium oxide, D2O) is a form of water containing a higher proportion of deuterium (heavy hydrogen, ²H) rather than common hydrogen (¹H). This calculator provides key thermodynamic properties of heavy water.
Key Properties Reference
| Property | Value | Unit |
|---|---|---|
| Boiling Temperature | 101.40 | °C |
| Melting Temperature | 3.81 | °C |
| Critical Temperature | 370.697 | °C |
| Critical Pressure | 21.671 | MPa |
| Critical Density | 0.356 | g/cm³ |
| Maximum Density | 1105.9 | kg/m³ |
| Molar Mass | 20.02751 | g/mol |
| Specific Heat (Cp at 20°C) | 4.219 | kJ/kgK |
| Latent Heat of Fusion | 306.2 | kJ/kg |
| Latent Heat of Evaporation | 2073.20 | kJ/kg |
| Surface Tension (at 25°C) | 71.87 | dyn/cm |
| Viscosity (at 20°C) | 1.251 | cP |
| pD (at 25°C) | 7.43 | - |