Cycloalkane solubility determination through differential scanning calorimetry

Solid-liquid equilibrium data for hydrocarbons are necessary in modeling of paraffin deposition in crude oil production. A multi-cell differential sca nning calorimeter (DSC) has been used to measure solubility of pentadecylcy clohexane and nonadecyclohexane in pentane, octane and toluene. The equilib rium solubility temperature of solutions of known composition was determine d by a simple linear extrapolation of the characteristic solubility tempera ture to an infinitely slow heating rate. The thermodynamic properties neces sary for solubility prediction (enthalpy of fusion and melting point temper ature) were obtained for the pure solutes. (C) 2001 Elsevier Science B.V. A ll rights reserved.