Hexavalent chromium compounds

Occupational exposure to hexavalent chromium compounds can cause lung cancer. The Health Council of the Netherlands is of the opinion that all hexavalent chromium compounds should be considered as carcinogens. The Health Council estimates that forty years of occupational exposure to 1 µg hexavalent chromium per cubic metre of air leads to 4 extra cancer cases per 1,000 individuals. Exposure to 0.01 µg/m3 during forty years leads to 4 extra cancer cases per 100,000 individuals.