Abstract
In this work, three triazine-type compounds were studied for their solubilities in aqueous and saline environments. Using potentiometric titration and gravimetric methods, the solubility of cyanuric acid (CA), 1,3,5-triacryloylhexahydro-1,3,5-triazine (TR), and 1,3,5-tris(2-hydroxyethyl) cyanuric acid (IC) were studied in aqueous NaCl solutions (0 to 0.226 mol·kg–1). From the solubility results, Setschenow coefficients, octanol/water partition coefficients, activity coefficients, and infinite dilution activity coefficients were determined. The trend of the solubility in pure water was IC ≫ TR > CA. The activity coefficient for CA increased continuously throughout the studied salt range. TR and IC, on the other hand, revealed a salting-in and salting-out effect based on the salt composition.
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