STP

{
  "id": "MLC-T-CHM-011452",
  "term": "STP",
  "field": "Chemistry",
  "definition": "Standard temperature and pressure, the reference conditions for reporting gas volumes, which IUPAC sets at 273.15 K (0 degrees Celsius) and 100 kPa. The older convention of 1 atm (101.325 kPa) is still used in many textbooks. One mole of an ideal gas occupies 22.711 litres at the IUPAC values and 22.414 litres at 1 atm.",
  "subject": "Chemistry and the Environment",
  "see_also": [
    "standard conditions for gases"
  ],
  "references": [
    "PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2217 (https://doi.org/10.1351/pac199062112167)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/stp/"
}