Fig. 11. Experimental thermal conductivity versus the temperature at 0.1 MPa for (a) ●, OM65, ▲, RTH64, and ■, stearic acid in this work and stearic acid reported by △ Mukhamedzyanov,⁴⁶ □, Bayram et al.,⁴⁷ ✕, Hopfe⁴⁸ and ✻ Kern and Nostrand⁴⁹ and OM65 reported by ○, manufacture. (b) ♦, [N₄₄₄₄⁺][Cl⁻]. The line represents the fitting of the equation with parameters of Table 12 and the dash line as guide to the eyes.