Solubility of fluphenazine decanoate in aqueous mixtures of polyethylene glycols 400 and 600 at various temperatures

•Solubility of fluphenazine decanoate (FD) in polyethylene glycol 400 + water at various temperatures.•Solubility of FD in polyethylene glycol 600 + water at various temperatures.•Prediction of solubility data in the mixed solvent.•Prediction of density of saturated solution using solute free density data.

The solubility of fluphenazine decanoate (FD) in aqueous binary mixtures of polyethylene glycols 400 (PEG 400) and 600 (PEG 600) at 298.0–318.0 K and atmospheric pressure along with some thermodynamic properties are reported. The previously trained version of the Jouyban–Acree model for PEG 400 + water, a recently proposed general cosolvency model employing partial solubility parameters, and a combination of the model with van’t Hoff equation were used to predict the solubility of FD in PEG 400 + water and PEG 600 + water at different temperatures. The results show that the Jouyban–Acree model can be used for solubility prediction of FD in aqueous mixtures of PEG 400 and PEG 600 at different temperatures. Densities of solute free aqueous mixtures of PEG 400 and PEG 600 along with their FD-saturated solutions are also reported.

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