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EC number: 614-682-8 | CAS number: 68647-95-0
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
It is expected that the substance in the environment will dissociates into its two main components Fatty acids C18- unsat, dimers (C36) and coco alkylamine.
The Koc for Cocoalkylamine ranges between log KOC:3.53-5.16, whereas the KOC for the Fatty acids C18-unsat, dimers (C36) ranges between log KOC : 7.4- 8.3.
Key value for chemical safety assessment
- Koc at 20 °C:
- 199 526 231
Additional information
Fatty acid C18- unsat, dimer compd. with coco alkylamine
The substance Fatty acids C18- unsat, dimers compd. with coco alkylamine is the salt of the components Fatty acids C18-unsat, dimers (C36) and coco alkylamine (CAS:61788-46-3). Once Fatty acids C18-unsat, dimers compd. with coco alkylamine is entering the aquatic environment it is expected that the substance dissociates into its two components Fatty acids C18- unsat, dimers (C36) and coco alkylamine. Based on this assumption it is justified to evaluate both components with regard to their behavior in the environment individually.
Coco alkylamine:
EPISuite v4.1/Kocwin2.00: The Koc estimations for the main components of coco alkylamine are avialable. Dodecylamine is the dominating structure in Cocoalylamine, whereas Octadecylamine (C18) due to the longest C-chain is considered as the worst case structure with regard to adsoption. The KOC values are in a range of 3437 - 147200 (Log Koc 3.53-5.16), depending on the length of the C-chain of the components.
An EU risk assessmnet for primery amines ( AMINES, TALLOW ALKYL ,(Z)-OCTADEC-9-ENYLAMINE ,OCTADECYLAMINE , AMINES, HYDROGENATED TALLOW ALKYL AMINE , AMINES, COCO ALKYL, RISK ASSESSMENT from 2008) uses the following distribution rates to calculate the adsoption behaviour of primery amines including Coco alkylamine: Kpsoil 697 l.kg-1, Ksoil-water 1050 m3.m-3, Kpsusp 697 l.kg-1, Ksusp-water 175 m3.m-3, Kpsed 697 l.kg-1, Ksed-water 349 m3.m-3, Kpsludge 680 l.kg-1
Fatty acids C18-unsat, dimers (C36)
EPISuite v4.1/Kocwin2.00: The Log Koc values of the main conformation isomers of the UVCB Fatty acids, C18-unsatd., dimers, (C36) have been determined using KOCWIN™ v2.00 module of EPI Suite v.4.11. KOCWIN™. The log Koc for the substructure is in the range of 7.44 - 8.30.
Overall conclusion of Fatty acid C18- unsat, dimer compd. with coco alkylamine
The estimations performed for the 2 main components Coco alakylamine and Fatty acids, C18-unsatd., dimers, (C36) show that the adsorption potential of Fatty acid C18- unsat, dimer compd. with coco alkylamine is mainly driven by the adsorption potential of Fatty acid C18- unsat, dimers (C36).
[LogKoc: 8.3]
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