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# Liquid ammonia - Thermal Properties at saturation pressure

## Density, specific heat, thermal conductivity, viscosity and Prandtls no. of liquid ammonia at its saturation pressure

At atmospheric pressure, ammonia, NH3, is present as a liquid at temperatures below -33.6 °C (-28.5 °F). At 10 bara, the condensation/boiling point is 25 °C (77 °F). For more details about phase transitions, see ammonia phase diagram.

Below the tables, properties of liquid ammonia at saturation pressure as function of temperatur, are shown in figures.

Thermal properties of liquid ammonia at saturation pressure:

Temperature
- t -
(oC)
Density
- ρ -
(kg/m3)

Specific Heat
(Heat Capacity)
- cp -
(kJ/(kg K))

Thermal Conductivity
- λ -
(W/(m K))
Dynamic Viscosity
- η -
(10-6 Pa s)
Prandtl's no.
-50 698 4.45 0.547 317 1.98
0 636 4.61 0.540 169 1.40
20 609 4.74 0.521 138 1.29
50 561 5.08 0.477 103 1.26
Temperature
- t -
(oF)
Density
- ρ -
(lb/ft3)

Specific Heat
(Heat Capacity)
- cp -
(Btu/(lbm oF))

Thermal Conductivity
- λ -
(Btu/(hr ft oF)
Dynamic Viscosity
- η -
(10-6 lb/(ft s))
Prandtl's no.
-58 43.4 1.06 0.32 213 1.98
32 39.7 1.10 0.31 113 1.40
68 38 1.13 0.3 93 1.29
122 35 1.21 0.28 69 1.26

## Related Topics

• Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more
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• en: Ammonia - Liquid Thermal Properties Density, specific heat, thermal conductivity

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## Citation

• Engineering ToolBox, (2011). Liquid ammonia - Thermal Properties at saturation pressure. [online] Available at: https://www.engineeringtoolbox.com/ammonia-liquid-thermal-properties-d_1765.html [Accessed Day Mo. Year].

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