Registration Dossier
Registration Dossier
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EC number: 927-870-2 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
The effect of the test item on the earthworm reproduction was assessed according to an OECD test n°222. The results obtained allowed to conclude that, taking into account the mortality, the growth and the reproduction of the exposed adults test organisms, the highest concentration of the test item without inhibitory effect on Eisenia fetida after the test period was determined to be, at least, 1 000.0 mg/ kg dry soil (highest tested concentration).
The effect of the test item on the nitrogen transformation activity of the soil microorganisms shown an EC50 of greater than 1000 mg/kg dry weight according the OECD 216 Guideline.
According to ECHA guide R7C, the test species should ideally cover different habitats and feeding modes in the soil as well as different taxonomic groups. For strongly adsorbing or binding substances soil-dwelling organisms that feed on soil particles (e.g. earthworms) are most relevant.
Plants are exposed mainly by a soil pore water pathway, whearas earthworms are exposed to the substance by diverse and multiple uptake routes (soil pore water, ingestion of soil material, soil air, secondary poisoning).
Furthermore, the substances in the category are highly insoluble; for uptake by plants, the substance needs to go into solution (interstitial or pore water) before exposure can occur, therefore testing the substances in plants is considered irrelevant.
So other terrestrial test are not needed.
Information 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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