Phase behavior of 1-alkyl-3-methyl imidazolium tetrafluoroborate ([C(n)mim][BF(4)], n = 2 to 10), 6-(hydroxymethyl)oxane-2,3,4,5-tetrol and water has been determined at temperatures in the range of (242.15 to 308.15) K. Binodal Curves, tie-lines, and the slope of the tie-line (STL) for [C(3)min][BF(4)]/[C(4)mim][BF(4)] + glucose + H(2)O systems were obtained at different temperatures of T = (278.15, 288.15, 298.15, and 308.15) K. Results show that, as the temperature decreases, the two-phase area expands and the STIL increases. Binodal curves were correlated using ail empirical equation, and tie-lines were correlated according to the Othmer-Tobias and Bancroft equations. These equations satisfactorily represented the experimental data. The molecular structure is used as ail argument to describe the phase-forming mechanism.