Chromium (Cr)

CAS Number



  • heavy metal
  • trivalent chromium: essential trace element for humans and animals

Main sources

  • chrome treatment industry
  • electroplating industry (metal alloys)
  • tanneries (leather tanning agents)
  • catalysts
  • colour pigmentation
  • wood stainers

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               100 kg/year
  • Water          50 kg/year
  • Soil              50 kg/year


  • hexavalent chromium, chromates: carcinogenic
  • hexavalent chromium: allergies
  • hexavalent chromium: asthma

    Further information

    Last modification 04.07.2018

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