Volumetric properties of the binary systems of dimethyl sulfoxide with methacrylic acid, vinyl acetate, butyl methacrylate, and allyl methacrylate at 298.15 K

Densities of the binary systems of dimethyl sulfoxide with methacrylic acid, vinyl acetate, butyl methacrylate, and allyl methacrylate have been measured as a function of the composition, at 298.15 K and atmospheric pressure, using an Anton Paar DMA 5000 oscillating U-tube densimeter. The calculated excess molar volumes were correlated with the Redlich-Kister equation and with a series of Legendre polynomials. The excess molar volumes are negative for the four binary systems, probably as a result of the large dipole moment of the solvent, and become smaller as the monomer becomes more branched or longer. Methacrylic acid exhibits substantially larger negative excess molar volumes, probably due to hydrogen bonding with the solvent. The system dimethyl sulfoxide with butyl methacrylate presents near ideal behavior.