Solubility of HFCs in lower alcohols

Solubilities of hydrofluorocarbons in ionic liquids: Experimental and modelling study

“…It was also found that solubilities increased as the difference square between solubility parameters of HFC and RTIL decreases. Although this conclusion is in agreement with previous works [45,47], it does not hold for other common solvents, like aromatic and lower alcohols studied in previous works [1,2]. Later in this approach, a combinatorial term in a Margules-like form, was introduced in the initial RST-based model to account for entropic effects.…”

“…This study is a continuation of previous works [1,2] where the solubility of some HFCs in volatile organic solvents (alcohols and aromatic solvents) was measured and correlated with the CPA EoS, to investigate the effect of association/solvation between solute and solvent molecules. Here, the solubility of CHF 3 ) was determined as a function of temperature at atmospheric pressure, using a volumetric method with an automated apparatus [3].…”

Measurement and correlation of solubility and dissolution properties of flunixin meglumine in pure and binary solvents

“…According to Sousa et al [21], the standard dissolution enthalpy DH 0 d (J mol À1 ), standard dissolution entropy DS 0 d (J K À1 mol À1 ) and standard molar Gibbs free energy DG 0 d (J mol À1 ) can be calculated by the following equations Table 4. It is obvious that the DH 0 d , DS 0 d and DG 0 d of FM are positive in all the solvents, which indicates that the dissolution processes in these systems are endothermic, entropy-driven and non-spontaneous.…”

Measurement, correlation of the solubility and solution thermodynamics of 2-cyanoguanidine in (methanol+water) binary solvent systems from T=(283.15 to 343.15)K

“…The dissolution enthalpy D dis H, the dissolution entropy D dis S and the molar Gibbs free energy D dis G estimated on the basis of the modified Apelblat model parameters at measured solubility points were calculated by the following equations [30]:…”