The phase transitions of the studied systems were also determined using the differential scanning calorimetry technique. For both parent ILs A and B, as well as all systems containing MCPA and dicamba (AB0.1-AB0.9), melting (Tm) and crystallization (Tc) temperatures were observed during heating and cooling cycles, respectively. The thermograms are available on Figs. A.32-A.42 (Supplementary Data), while values of the phase transition temperatures are summarized in Table .10 (Supplementary Data). The presence of a long hexadecyl substituent in the cation of ILs and DSILs significantly reduced lattice energy. This is evidenced by the fact that analogous MCPA and dicamba salts with shorter substituents in the cation underwent only glass transition at temperatures lower than -30 °C. As shown in Fig. , the observed Tm values ranged from -28 °C (IL A) and rose with increasing xdic value up to -12 °C for B.