Liquid-Liquid Equilibria for the Three Ternary Systems (3-Methyl-N-butylpyridinium Dicyanamide + Toluene + Heptane), (1-Butyl-3-methylimidazolium Dicyanamide + Toluene + Heptane) and (1-Butyl-3-methylimidazolium Thiocyanate + Toluene + Heptane) at T = (313.15 and 348.15) K and p = 0.1 MPa Hansmeier, A.R.; Ruiz, M.M.; Meindersma, G.W.; de Haan, A.B.; Journal of Chemical & Engineering Data 2010, 55, 708-713