Nitrous oxide (N2O)

CAS Number



  • colourless gas
  • very long life in the atmosphere

Main sources

  • use of fertiliser on agricultural land (microbial degradation processes in soil and water)

Thresholds for the reporting requirement of facilities in accordance with Annex 2 PRTRO

(Ordinance on the Register relating to Pollutant Release and the Transfer of Waste and of Pollutants in Waste Water)

  • Air               10,000 kg/year
  • Water           -
  • Soil               -


  • not toxic to humans and animals in normally occurring concentrations
  • respiratory illnesses
  • depletes the ozone layer
  • greenhouse gas (greenhouse potential 310 above that of carbon dioxide (CO2))

Status and changes

Further information

Last modification 04.07.2018

Top of page