Abstract
The solubility of spirotetramatin four binary solvents (methanol + water, ethanol + water, isopropanol + water, acetone + water) were studied by laser monitoring observation technique. The solubility data of spirotetramat in binary mixed solvents were subsequently fitted by the modified Apelblat model, λh model, Van't Hoff model, Jouyban-Acree model and NRTL model. The results showed that Apelblat model and Van't Hoff model were more suitable for fitting the solubility data. Furthermore, the effects of the solute–solvent intermolecular interactions on the solubility were analyzed using the KAT-LSER model. The results showed that the dipolar/polarizability of the solvent had the greatest influence on the solubility of spirotetramat.
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