This paper presents new absolute measurements of the thermal conductiv
ity of aqueous sodium chloride solutions with the transient coated-hot
-wire technique. The data cover the range 295-365 K at pressures sligh
tly above the vapor pressures and a concentration range of 0-6 mol kg(
-1), The instrument is;able to measure the thermal conductivity with a
precision and reproducibility better than +/- 0.2%, and a comparison
of the present results with data available in the literature indicates
that the accuracy of the-present data is better than +/- 0.5%. An emp
irical correlation that reproduces the data within the claimed accurac
y is given.