EXCESS MOLAR VOLUME, EXCESS ISENTROPIC COMPRESSIBILITY AND EXCESS MOLAR REFRACTION OF BINARY-MIXTURES OF METHYL ACETOACETATE WITH BENZENE, TOLUENE, META-XYLENE, MESITYLENE AND ANISOLE

Excess molar volume, excess isentropic compressibility and excess molar refraction of binary mixtures of methyl acetoacetate (MAA) with benzene, toluene, m-xylene, mesitylene and anisole have been determined. The results are fitted to a third order polynomial relation to estimate the coefficients and standard errors. The excess molar volumes of all the binary mixtures over the temperature range 298.15-308.15 K are positive, suggesting the presence of weak dispersion-type molecular interactions. The isentropic compressibilities are negative for mixtures of MAA with benzene and toluene; however, for mixtures of MAA with mesitylene, anisole and m-xylene, both positive and negative values are obtained. Of all the mixing rules used to predict excess molar refraction, the Eykman relation is recommended for analysis of refractive index data.