Binary liquid-liquid phase equilibria for 15 systems containing an ionic liquid. (1-ethyl-3-methyl-imidazolium thiocynate, 1-ethyl-3-methyl-imidazolium trifluorocetate, 1-ethyl-3-methyl-imidazolium trifluoromethanesulfonate) with a hydrocarbon (n-hexane, n-heptane, cyclohexane, benzene, toluene) were measured using dynamic method. The influence of the anion structure of 1-ethyl-3-methyl-imidazolium cation based ionic liquids on solubility of aliphatic andaromatic hydorcarbons is discussed. The liquid-liquid solubility data are reported only for the ionic-liquid-rich side of the phase diagram. It was found that the solubility of investigated hydrocarbons is the highest of ionic liquid with trifluoromethanesulfonate anion and the lowest of 1-ethyl-3-methyl-imidazolium thiocyanate.