Registration Dossier
Registration Dossier
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EC number: 231-293-5 | CAS number: 7486-38-6
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
To establish a PNECsoil as apart of a quantitative assessment of risk to the soil compartment, the equilibrium partitioning method (EPM) is used.
Key value for chemical safety assessment
Additional information
Based on the absence of data, a read-across approach with adipic acid is applied. In aqueous media, disodium adipate and adipic acid acid dissociate into the corresponding anion (1,6-hexandioic acid ion) and the sodium ion and hydrogen ion (proton), respectively. Fate, behavior and the ecotoxicological properties of adipic acid and its disodium salt are thought to be an effect of the di-carboxylate ion rather than of the sodium ion or the hydrogen ion (proton), which are normal constituents in environmental systems and have no relevant ecotoxic properties in low concentrations. Therefore a read-across between disodium adipate and adipic acid is justified.
Several studies of the toxicity of adipic acid towards terrestrial plants were found in the literature.
The scope of the terrestrial effects assessment under the adopted REACH regulation is restricted to soil organisms in a narrow sense and does not actually include adverse effects on soil functions that are only indirectly linked to the biota in soils. All tests described above, were designed assessing the influence of adipic acid on germination and growth on moist filter paper or agar treated with the substance. As no soil was used in the tests standardisation of soil effect data to given soil parameters is not possible. Further, converting the results to an appropriate dimension is not applicable. Therefore the results should not be used for the hazard assessment. Nevertheless, the obtained effect values indicate that adipic acid is of low toxicity to terrestrial plants
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