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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 278-859-8 | CAS number: 78181-99-4
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Adsorption to the solid soil phase is expected.
Key value for chemical safety assessment
- Koc at 20 °C:
- 1 950
Additional information
The test substance possesses surface active properties and is a strong base. Due to these reasons an experimental determination of the log Koc via OECD 121 was scientifically not feasible. Therefore, calculation models were applied in order to estimate the adsorption behavior of the test substance.The log Koc for the uncharged mole was calculated to be 5.06 (MCI method) using SRC PCKOC v2.0 (BASF SE, 2013). The dissociation constants (pKa) of the test substance were estimated to be 5.61 and 5.01 for the amine parts of the molecule (chemicalize.org, online query 2013-04-03).These pKa values indicate that the molecule will partly exist as a cation in the environment. Hence, the PCKOC-model may estimate adsorption to organic carbon defectively since it does not consider the ionic structure of the molecule.Under environmentally relevant conditions (pH from 5 to 9) the test substance is partly present in its charged forms.In a calculation conducted according to a publication by Franco & Trapp, 2008 using the parameters pKa = 5.61 and 5.01 and log Pow = 4.31 (value for the uncharged molecule, estimated using EPIWin v4.11) a log Koc range of 3.12 at pH 5 and 3.29 at pH 9 was determined. Based on these data the test substance is expected to bind to the solid soil phase.
[LogKoc: 3.29]
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.
