THERMAL EFFECTS OF DISSOLUTION OF THE DYE DIRECT RUBY RED IN WATER AND AQUEOUS SALT-SOLUTIONS

Te thermal effects of the dissolution of the dye direct ruby red in wa ter and aqueous salt solutions were measured at 298 K. An influence of the association of the dye and of the nature of the inorganic electro lyte on the thermal effect of solution was established. It was shown t hat with increasing charge of the cation and size of the anion of the inorganic electrolyte, a lower salt content in solution is required to change the concentration function DELTAH(ss)m = f(m).