Eutonic reaction

{
  "id": "MLC-T-CHM-004124",
  "term": "Eutonic reaction",
  "field": "Chemistry",
  "definition": "A reversible dissolution process in a system with three or more components, in which the liquid phase is saturated with all of its dissolved solutes at the same moment, so several solubility equilibria coexist. In a ternary system, fixing the temperature and pressure fixes the eutonic point completely, and the solvent's chemical potential is at a minimum there. Eutonic points have been located only in aqueous systems, for example Na2SO4 + CuSO4 + H2O.",
  "synonyms": [
    "(isothermally and isobarically invariant) reaction of double saturation",
    "isothermally invariant reaction"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "peritonic reaction",
    "ternary system"
  ],
  "references": [
    "PAC, 2008, 80, 233. 'Glossary of terms related to solubility (IUPAC Recommendations 2008)' on page 246 (https://doi.org/10.1351/pac200880020233)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/eutonic-reaction/"
}