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# 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:

Supercooled Water - Vapor Pressure vs. Temperature
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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## Citation

• The Engineering ToolBox (2014). Supercooled Water - Vapor Pressure vs. Temperature. [online] Available at: https://www.engineeringtoolbox.com/water-supercooled-vapor-pressure-d_1910.html [Accessed Day Month Year].

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4.19.9

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