Registration Dossier
Registration Dossier
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EC number: 235-727-4 | CAS number: 12626-81-2
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The selected NOEC and EC10 values on functional parameters vary from 96 to 4144 mg Pb/kg (both values observed for respiration). Additionally, NOEC or EC10 values are selected for different enzyme assays, ranging from 132 mg Pb/kg for dehydrogenase to 16576 mg Pb/kg for phosphatase.
Key value for chemical safety assessment
- Long-term EC10 or NOEC for soil microorganisms:
- 96 mg/kg soil dw
Additional information
There are 4 reliable NOEC or EC10 values selected for different functional parameters for microbial processes. The functional parameters comprise C- and N-mineralization. The selected NOEC and EC10 values on functional parameters vary from 96 to 4144 mg Pb/kg (both values observed for respiration). Additionally, NOEC or EC10 values are selected for different enzyme assays, ranging from 132 mg Pb/kg for dehydrogenase to 16576 mg Pb/kg for phosphatase. The ecological relevance of reduced enzymatic activities is unclear and, therefore these data re not used for PNEC calculation, but only presented as supporting evidence.
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