The present model, Eq. (1), aims to provide an approach for predicting the thermal conductivity of a binary molten salt based on measured data of its components. It is accordingly implied that the accuracy of predicted results for a mixed molten salt depends upon the measured data of each components. Though measured data can be traced in various literatures, only those including the thermal conductivity of pure component substances and their mixture all from a same research group are selected for testifying the present model. Unfortunately, this Vilanterol trifenatate few data with which to work. Among these, data from Tufen and his coworkers  include the thermal conductivity of NaNO3, KNO3 , and their mixture at 0.5–0.5 mol fraction. Data from McDonald and Davis  are very convenient to use for verifying the present model. Data for the mixture of KF and NaF  are also presented but cannot be straightly used to justify theoretical models because data of NaF have to be obtained by extrapolation. Density data of component salts are also from published literatures  and . Careful examination of data from Tufeu et al.  and Omotani et al.  reveals hair root these two research groups provide experimental results for NaNO3, KNO3 and their mixtures with high consistency. Omotani’s data  for NaNO3 and NaNO3–KNO3 mixture are therefore used for comparison of the temperature dependence of the thermal conductivity with KNO3 data, which is scarce in Ref. , taken from Ref. .