Dystonic reaction

{
  "id": "MLC-T-CHM-003536",
  "term": "Dystonic reaction",
  "field": "Chemistry",
  "definition": "A reversible dissolution process, at constant temperature and pressure, in a system of at least three components whose solution is saturated with a stoichiometric compound formed from two or more of them, for example a hydrated double salt. The solvent's chemical potential and vapour pressure both peak at the dystonic point. Only water-based systems, for example Na2SO4 + CuSO4 + H2O, are so far known to show dystonic points.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "eutonic reaction",
    "peritonic reaction"
  ],
  "references": [
    "PAC, 2008, 80, 233. 'Glossary of terms related to solubility (IUPAC Recommendations 2008)' on page 244 (https://doi.org/10.1351/pac200880020233)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/dystonic-reaction/"
}