Registration Dossier
Registration Dossier
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EC number: 283-044-5 | CAS number: 84539-55-9
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption potential of Acetic acid, oxo-, sodium salt, reaction products with ethylenediamine and phenol, iron sodium salts is low.
Key value for chemical safety assessment
- Koc at 20 °C:
- 0.012
Additional information
No study investigating the adsorption potential of Acetic acid, oxo-, sodium salt, reaction products with ethylenediamine and phenol, iron sodium salts is available. In accordance with column 2 of REACH Annex VIII, an Adsorption-/Desorption-Screening test (required in chapter 9.3.1) does not need to be conducted, since the log Pow value is very low (< -4.2, caused by the ionic nature under environmentally relevant pH conditions) and thus adsorption onto the organic fraction of soil or sediment is not a relevant process in the environment. This is confirmed by QSAR calculations for the Fe-complex using KOCWIN v2.00, which resulted in KOC values of 0.012 based on the log KOW method. The substance did not completely fall into the applicability domain of the QSAR; however, the deviations are not considered to devalide the calculated value and the assumption of very low adsorption potential: 1) log Kow slightly lower than that of the test set: The fact the the calculated logKow value (-4.16, which is congruent with the measured value in the dossier) is slightly lower than the logKow range of the test set (8.12 to -2.11) indicate that the correction based on lipophobicity is underestimated and thus the QSAR calculation conservative in this regard; 2) Number of instances of the correction factor: Misc (C=O) Group (aliphatic attach) does exceed the maximum number as listed in Appendix D: The influence of the correction factors on the result are limited, since the non-corrected logKoc is already very low: -1.37.
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