Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 946-260-7 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
Log pow calculated from critical micelle concentration (cmc) and octanol solubility to be log pow=3.1
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 3.1
- at the temperature of:
- 20 °C
Additional information
Primary ammonium derivatives, like amine acetates, are surface active substances due to their positive charge. A back reaction to the free amine in solution is not expected as the amines are strong bases (pKa 10.6), such that at neutral pH (pH 7) these compounds are ionized (primary ammonium ion) by 99.98%.
Sorption characteristics and the potential to form aggregates prevent a reliable measurement of the partition coefficient for primary fatty amines (PFA) and their acetates, which, due to their surface activity, are difficult substances with regard to the determination of the partitioning coefficient n-octanol water (Pow).
According to EU method A.9 (Partition Coefficient), neither of the two alternative methods outlined do fully apply: The shake-flask method and the HPLC method are not applicable to surface active materials.
In accordance with EU method A.9, the log Pow is calculated from the solubilities in water (cmc) and n-octanol.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
