Apparent molar properties of hydroxyethyl ammonium based ionic liquids with water and ethanol at various temperatures

The density (ρ) and speed of sound (u) data for the Binary mixtures of two protic ionic liquids, N-Butyl-2-hydroxyethyl ammonium formate ([BHEA][For]) and N-Butyl-2-hydroxyethyl ammonium acetate ([BHEA][Ace]), with ethanol as a function of molality (m) measured at 298.15 K.137