Ammonia (NH3)

CAS Number



  • pungent smelling, colourless gas

Main sources

  • livestock management (storage and spreading of farm manure)
  • industrial processes

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               -


  • acute damage to vegetation in high concentrations
  • over-fertilization and contribution to the acidification of the soil with harmful consequences for ecosystems
  • major precursor in the formation of secondary aerosols (particulate matter)

Status and changes

Further information

Last modification 16.12.2016

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