Abstract
The equilibrium solubility of amidinothiourea (ATU) in monosolvents, including N-methyl-2-pyrrolidone (NMP), acetone, 1,4-dioxane, acetonitrile, ethyl acetate, toluene, methanol, 1-butanol, 1-propanol, ethanol, 2-propanol, and cyclohexane, was determined by using a isothermal saturation method. The experimental temperature and pressure are 283.15–323.15 K and 101.3 kPa, respectively. The sequence of solubility from high to low is NMP > acetone > 1,4-dioxane > methanol > ethanol > acetonitrile > 1-propanol > ethyl acetate > 2-propanol > 1-butanol > toluene > cyclohexane. Two models (modified Apelblat equation and λh equation) were employed to describe the relationships between solubility of ATU in mole fraction and temperature, and the values of relative average deviations and root-mean-square deviations between the experimental and calculated solubilities were no more than 2.07% and 1.96×10–4, respectively. The appropriateness of the models was evaluated by statistical analysis. Based on the results of st...
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