Registration Dossier
Registration Dossier
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EC number: 298-364-0 | CAS number: 93803-89-5
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Experimental data on the toxicity of 2,2-bis[[(1-oxoisononyl)oxy]methyl]-1,3-propanediyl diisononanoate (CAS 93803-89-5) to terrestrial plants are not available. In accordance with Regulation (EC) No. 1907/2006, Annex IX, column 2, 9.4 studies on terrestrial organisms do not need to be conducted when there is no risk indicated by the chemical safety assessment.
Based on the available experimental toxicity data with Eisenia fetida the substance is expected to be not toxic to soil organisms.If transferred to the soil an adsorption to soil particles is probable as indicated by the high log Koc (> 5). Furthermore the substance has a low water solubility (< 0.05 mg/L, Frischmann, 2012) indicating that its concentrations in soil pore water are negligible. Thus, the substance is presumably not available for plants in the soil. An uptake of the substance by plant roots is also hindered by the high molecular weight of the substance (697.04 g/mol) preventing the substance from crossing biological membranes. However, acute or chronic toxicity of the substance to terrestrial organisms is generally not expected. The lack of chronic toxicity of the substance was demonstrated by a study chronic toxicity on Eisenia fetida (OECD 222). Neither mortality nor an effect on earthworm reproduction was observed (NOEC (56 d):≥1000 mg/kg soil dw).
In conclusion, the substance is unlikely to pose a risk for terrestrial plants based on a) the lack of exposure and b) the low toxicity as expected for this substance for the terrestrial compartment based on the available experimental data and the lack of adverse effects in aquatic ecotoxicity tests.
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