Registration Dossier
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EC number: 237-158-7 | CAS number: 13674-84-5
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
A short-term and a long-term toxicity test with the earthworm Eisenia foetida were available. The tests fulfilled the criteria for acceptability for determining each PNEC respectively. The results were:
Short-term:
14-day LC50standardised 33.0 mg/kg dry weight.
14-day NOECstandardised 10.9 mg/kg dry weight
Long-term:
56-day NOECstandardised 18.02 mg/kg dry weight
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil macroorganisms:
- 33 mg/kg soil dw
- Long-term EC10, LC10 or NOEC for soil macroorganisms:
- 18.02 mg/kg soil dw
Additional information
A short-term and a long-term toxicity test with the earthworm Eisenia foetida were available. The tests fulfilled the criteria for acceptability for determining each PNEC respectively. A 14-day LC50 of 97 mg/kg dwt has been determined in the test along with a 14-day NOEC of 32 mg/kg dwt. A 56-day NOEC (28-day adult plus 28-day juvenile exposure period) of 53 mg/kg dwt for earthworm reproduction has been determined in the test.
The organic matter content was approximately 10% (sphagnum moss peat 10% w/w dry weight of test soil). Therefore the results need to be corrected to obtain a result relevant for natural soils, containing a TGD default of 3.4% organic matter. A correction factor of 0.34 is therefore applied, giving standardised results of:
14-day LC50standardised 33.0 mg/kg dry weight
14-day NOECstandardised10.9 mg/kg dry weight
56-day NOECstandardised18.02 mg/kg dry weightInformation on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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