One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 1897-52-5, Name is 2,6-Difluorobenzonitrile, formurla is C7H3F2N. In a document, author is He, Haixia, introducing its new discovery. COA of Formula: C7H3F2N.
Solubility measurement, model evaluation and Hansen solubility parameter of piperonylonitrile in four binary solvents
The present research work proposed the mole fraction solubility and mixing thermodynamic properties of piperonylonitrile in different binary solvent mixtures such as ethanol + (acetone, 1,4-dioxane, DMF and methyl acetate) at T = 278.15 K to 323.15 K and p = 0.1 MPa. The results indicated that as the temperature and mass fraction of positive solvents increased, the measured solubility of piperonylonitrile increased in all mixtures considered. Analysis using Hansen solubility parameter revealed that the affinity between piperonylonitrile and all mixed solvents was related to multiple factors. The experimental solubility of piperonylonitrile in four binary solvent mixtures was regressed by employing four thermodynamic models such as UNIQUAC, Margules, Wilson and NRTL model. It was found that the Wilson model was accurate enough to correlate the experimental solubility. Moreover, the mixing thermodynamic properties of piperonylonitrile in different mixed solvents were also estimated and discussed according to the Wilson model and experimental data. The results of the negative Delta(mix)G values and positive Delta S-mix values demonstrated the entropy-driven and spontaneous mixing process of piperonylonitrile in all binary solvent mixtures. (c) 2020 Elsevier Ltd.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1897-52-5 help many people in the next few years. COA of Formula: C7H3F2N.