Optical purity

{
  "id": "MLC-T-CHM-008276",
  "term": "Optical purity",
  "field": "Chemistry",
  "definition": "A measure of the enantiomeric excess of a chiral substance, determined by comparing the observed optical rotation of a sample with the maximum optical rotation of the pure enantiomer. It is expressed as a percentage and indicates the proportion of one enantiomer over the other in a mixture. Optical purity is numerically equal to the enantiomeric excess for a given sample.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "enantiomer",
    "enantiomeric excess"
  ],
  "references": [
    "PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2212 (https://doi.org/10.1351/pac199668122193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/optical-purity/"
}