Solubility of Tris(hydroxymethyl)aminomethane in Water + Methanol +1-Propanol Mixtures at Various Temperatures

Abstract

The solubility of tris(hydroxymethyl)aminomethane (TRIS) in various mass fractions of ternary solvent mixtures of water + methanol +1-propanol at 293.2 K, 298.2 K, 303.2 K, 308.2 K, and 313.2 K was measured using a laser monitoring technique. The mole fractions of water in the ternary mixtures were between 0.90 and 0.17; the mole fraction solubility of TRIS ranged between 0.0150 and 0.1187. The generated data was mathematically represented by the combined models of Jouyban–Acree and van’t Hoff, enabling the solubility to be expressed as a function of both ternary solvent compositions and temperatures. The back-calculated mole fraction solubilities agreed with the corresponding experimental values by an overall mean percentage deviation of 5.6%.