Brine - Properties

Properties

It is liquid. Density of brine at various concentrations and temperatures can be approximated with a linear equation: Density (lb/ft3)= a3 - (a2*Temperature (F)) where the values of a are:

Weight % a2 a3
5 .043 72.60
10 .039 73.72
15 .035 74.86
20 .032 76.21
25 .030 77.85

The thermal conductivity of seawater (3.5% dissolved salt by weight) is 0.6 W/mK at 25 °C. The thermal conductivity decreases with increasing salinity and increases with increasing temperature; these graphs and online calculations plot thermal conductivity for varying salinity and temperature:

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