Volumetric Properties of the {x₁[C₄mim][MeSO₄] + (1 - x₁)MeOH} System at Temperatures from (283.15 to 333.15) K and Pressures from (0.1 to 35) MPa.

ABSTRACT: Densities of pure 1-butyl-3-methylimidazolium methylsulfate, [C₄mim][MeSO₄], and its mixtures with methanol have been measured. Measurements were made with an accuracy of ±0.2 kg·m^-3, using a vibrating-tube densimeter, over the temperature and pressure ranges (283.15-333.15) K and (0.1-35) MPa, respectively. The experimental densities for the pure ionic liquid and alcohol have been correlated by the Tait equation. The results for the {x₁[C₄mim][MeSO₄] + (1 - x₁)MeOH} system have been correlated by a van Laar equation involving parameters that are dependent on temperature and pressure. Excess volumes have been obtained directly from the experimental densities, while isobaric expansivities, isothermal

SUBMITTER: Matkowska D 

PROVIDER: S-EPMC3676643 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature