Speeds of sound and excess volumetric properties of mixtures of water with ethylene glycol monopropyl ether at 298.15 K

Abstract Densities and ultrasonic speeds of binary mixtures of water with ethylene glycol monopropyl ether have been measured at 298.15 K over the entire composition range. Estimates of the isentropic molar quantity, K s , equal to −( ∂ V/ ∂p ) s , and of its excess counterpart, K s E , were obtained from the density values, in combination with those of the ultrasonic speed. Our results have been compared with those reported earlier for 2-propanol +, and ethylene glycol monoisopropyl ether + water systems, and with literature data relative to the 1-propanol + water system. The various excess molar quantities have been analyzed using segmented-composition models, including a version onto which a mass action component has been grafted.