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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 301-097-5 | CAS number: 93981-14-7
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The acid component of the test substance was found to have log10Koc values of 2, <1.3 and <1.3 at pH 4, 7 and 9 respectively. The amine component of the test substance was found to have log10Koc values of 3.2, 2.4 and 2.2 at pH 4, 7 and 9, respectively.
Key value for chemical safety assessment
- Koc at 20 °C:
- 20
Additional information
The soil adsorption coefficient of the test substance was determined in accordance with the OECD Guideline for Testing of Chemicals 121. The HPLC method was used to determine the log Koc value for the acid and amine components of the test substance. As the test substance contains ionisable components, the test was performed at pH 4, 7 and 9, covering the pH range of environmental release. This is in accordance with the requirements of the OECD Testing Guideline (121), which states that for ionisable substances both the ionised and non-ionised forms should be tested. Based on the dissociation constants of the acid and amine components of the test substance (previously determined via an experimental study and detailed in Section 4.2.1 of the IUCLID) this pH range ensures that the soil adsorption study took account of the ionised and non-ionised form. The acid component of the test substance was found to have log10Koc values of 2, <1.3 and <1.3 at pH 4, 7 and 9 respectively. The amine component of the test substance was found to have log10Koc values of 3.2, 2.4 and 2.2 at pH 4, 7 and 9, respectively. The adsorption/desorption coefficient of triethanolamine was determined via calculation of the ionized molecules and was found to be Koc = 17 (Log Koc = 1.24).
[LogKoc: 1.3]
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.
