Supercooled Water - Vapor Pressure vs. Temperature
Undercooled water and vapor pressure.
Water freezes at 273.15 K (0 °C, 32 °F) - but can be supercooled (undercooled) without becoming a solid at standard pressure down to almost 224.8 K (−48.3 °C, −55 °F) if it is pure and free of nucleation sites.
Vapor pressure of supercooled water:
| Temperature (oC) | Vapor Pressure (kPa) |
|---|---|
| 0 | 0.6112 |
| -5 | 0.4218 |
| -10 | 0.2865 |
| -15 | 0.1913 |
| -20 | 0.1255 |
| -25 | 0.08078 |
| -30 | 0.05094 |
| -35 | 0.03141 |
| -40 | 0.01891 |
- 1 Pa = 1.45 10-4 psi (lbf/in2)
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