Registration Dossier
Registration Dossier
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EC number: 939-498-8 | CAS number: -
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption potential of the substance is low.
Key value for chemical safety assessment
- Koc at 20 °C:
- 21.4
Additional information
One study evaluating the adsorption potential of Reaction product of fatty acids C14-18/C16-18 unsaturated with dihydrogendioxide and ammonia is available. The study was performed according to OECD guideline 121 under GLP conditions. In this study, the test item revealed to have a retention time higher than sodium nitrate, but lower than acetanilide, which has the lowest adsorption coefficient according to the table of reference items in OECD guideline 121. Thus, no exact value could be determined; however, the log Koc is determined to be < 1.25. Thus, the adsorption potential of the substance is considered to be low. QSAR calculations for its main components using KOCWIN v2.00 supported this assumption by showing similar low Koc values (log Koc: 1.33 - 2.95). However, a higher log Koc of 6.31 was calculated for the dimer component indicating that this component may have an adsorption potential.
In absence of a distinct measured Koc value , the lowest calculated log Koc value of 1.33 (Koc = 21.4) was used for the PNEC derivation of sediment and soil using the equilibrium partitioning method.
[LogKoc: 1.33]
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