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EC number: 215-607-8
CAS number: 1333-82-0
From an EU review of studies to assess the impact of chromium (VI) and (III) on microbially-mediated soil processes a statistical assessment was carried out. A substantial amount of information is available for the toxicity of chromium (VI) to terrestrial organisms. In the environment, it is likely that chromium (VI) will be reduced to chromium (III) in soil, and it is also likely that such conversion would have taken place in many of the toxicity tests.
It is considered that an assessment factor of 1 is sufficient, hence
the PNEC for soil processes with chromium (III) is 5.9 mg/kg.
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