íNDICES DE REFRACCIóN, DENSIDADES Y PROPIEDADES DERIVADAS DE MEZCLAS BINARIAS DE SOLVENTES HIDROXíLICOS CON LíQUIDOS IóNICOS (1-ETIL-3-METILIMIDAZOLIO ETILSULFATO Y 1-METIL-3-METILIMIDAZOLIO METILSULFATO) DE 298,15 A 318,15 K

densities and refractive indices of binary mixtures of water, methanol and ethanol with 1-ethyl-3-methylimidazolium ethylsulfate (emim-etso4) and ethanol with 1-methyl-3-methylimidazolium methylsulfate (mmim-meso4) in the temperature range (298.15, 308.15 and 318.15) k were measured. the excess of molar volumes (vme) and the deviation of the refractive index (dn ), were fitted to an order fourth polynomial equation of redlich-kister.