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EC number: 232-140-5
CAS number: 7789-00-6
Several studies, collectively, provide a weight-of-evidence to support the acute and long-term toxicity to soil macro-organisms are reported in the EU RAR.
Once released into soil, it is likely that much of the chromium (VI)
present will be reduced to chromium (III). Toxicity data are available
for chromium (VI) in soil, but it is also likely that in these
experiments the majority of the chromium present will be converted to
chromium (III) during the test. Chromium (III) has generally been shown
to be less toxic than chromium (VI) to soil organisms. For Cr(VI) LC50
and EC50 values were 146 and 792 mg Cr(VI)/kg dry soil. An NOEC value of
32 mg Cr(III)/kg dry soil was observed.
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