Registration Dossier
Registration Dossier
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EC number: 236-921-1 | CAS number: 13548-38-4
Bioaccumulation: terrestrial
Administrative data
Link to relevant study record(s)
Description of key information
BCF values for the accumulation of chromium in the worms were 0.031-0.047 at the three lowest (10, 32 and 100 mg/kg dw)and 0.016-0.019 at the two highest dose levels (320 and 1000 mg/kg dw). Control soil contained 6.3 mg Cr/kg dry weight; the BCF value for worms kept in this soil therefore is 0.048.
Key value for chemical safety assessment
- BCF (terrestrial species):
- 0.048 L/kg ww
Additional information
Accumulation and elimination of chromium of the earthworm Eisenia andrei was determined in an artificial soil. Five concentration groups of 10, 32, 100, 320 and 1000 mg/kg dw soil and control group were administrated to the test earth worms. Chromium
was significantly accumulated and earthworm reproduction significantly reduced at soil concentrations of 100 mg/kg and higher. Chromium was completely eliminated and reproduction no longer affected at the end of a 3-week recovery period. BCF values for the accumulation of chromium in the worms were 0.031-0.047 at the three lowest and 0.016-0.019 at the two highest dose levels. Control soil contained 6.3 mg Cr/kg dry weight; the BCF value for worms kept in this soil therefore is 0.048.
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