“…Some cyclic acetals and ketals are considered as perspective additives to gasoline, biofuels and diesel fuels capable of improving the octane number, phase stability and (or) ecological characteristics [1,2]. Alkyl-derivatives of 1,3-dioxolane-4-methanol have appeared to be effective, inexpensive and nontoxic icing inhibitors [3,4]. Practical tasks and the research interest to specific features of the behavior of solutions containing cyclic polyethers stimulate the studies of thermodynamic properties of such systems, and a special attention is paid to their phase behavior.…”