Chemical purity

{
  "id": "MLC-T-CHM-001958",
  "term": "Chemical purity",
  "field": "Chemistry",
  "definition": "A measure of the degree to which a chemical substance is free from other chemical substances. It is expressed as a mass fraction, mole fraction, or volume fraction of the main component relative to the total substance. For a certified reference material, the chemical purity is a stated property value with a corresponding measurement uncertainty, for instance, 0.9998 g/g ± 0.0001 g/g.",
  "synonyms": [
    "purity"
  ],
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1003 (https://doi.org/10.1515/pac-2019-0819)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/chemical-purity/"
}