Redox indicator

{
  "id": "MLC-T-CHM-010039",
  "term": "Redox indicator",
  "field": "Chemistry",
  "definition": "A substance that undergoes a distinct and reversible color change over a specific range of redox potentials. This change in color signals the equivalence point in a redox titration, where the analyte has been completely oxidized or reduced. The indicator's standard electrode potential must be close to the equivalence point potential of the titration for accurate results.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "titrand"
  ],
  "references": [
    "PAC, 2025, 97, 137. 'Glossary of terms for mass and volume in analytical chemistry (IUPAC Recommendations 2024)' on page 5 (https://doi.org/10.1515/pac-2023-0903)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/redox-indicator/"
}