Mao Pei-sheng
2007
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Journal
Journal of Chemical Engineering of Chinese Universities
Abstract
Physical properties of the system related to the process of synthesizing ethyl 3-hydroxybutyrate were determined. Densities and viscosities of the binary mixture of ethyl crotonate with ethanol at different compositions were determined at the temperature range from 293.15 K to 343.15 K and under atmospheric pressure by using a vibrating U-shaped tube densimeter and Ubbelohde suspended-level viscometer. Density values were used in the calculation of excess molar volumes and the achieved viscosities were used to calculate the viscosity deviations. For this system, the excess molar volumes are negative and the deviations of viscosity are negative too. Excess molar volumes and deviations of viscosity were correlated with the Redlich-Kister equation, respectively, and the standard deviations are lower than 5%. The results show that the R-K equation can be used to correlate the two mentioned physical properties of this system well.