Volumetric and Optical Properties of Dimethylvinylethoxysilane with n-Alkanes (C7 to C10) at Temperatures in the Range (298.15 to 318.15) K

Densities and refractive indices are investigated for four binary mixture systems of dimethylvinylethoxysilane with n -heptane, n -octane, n -nonane and n -decane at different temperatures (298.15, 303.15, 308.15, 313.15 and 318.15 K) and atmospheric pressure. From these experimental data, the excess molar volume, isobaric coefficient of thermal expansion, deviation in refractive index, molar refraction, and deviation in the molar refraction have been calculated. The computed quantities have been fitted with the Redlich–Kister equation to derive the coefficients and estimate the standard deviations. The values of the partial excess volume at infinite dilution were calculated using the coefficients of the Redlich–Kister smoothing equation. The effects of composition and temperature on these properties are discussed.