Excess molar volumes at 298.15 K and atmospheric pressure were measured for {x(1) (CH3(CH2)(3))(2)O + x(2) CH3(CH2)(4)OH + (1 - x(1) - x(2)) CH3(CH2)(6)CH3} and the corresponding binary mixtures, with an Anton Paar densimeter. All the experimental values were compared with the results obtained by different prediction methods.