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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 258-110-1 | CAS number: 52697-38-8
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption coefficient log Koc was determined to be 3.8 for soil and 4.0 for sewage sludge.
Key value for chemical safety assessment
- Koc at 20 °C:
- 10 000
Additional information
A study was conducted to determine the adsorption coefficient (Koc) on soil and sewage sludge of the read across substance ‘structural analogue 2’ using high performance liquid chromatography (HPLC) according to OECD Guideline 121 and EU Method C.19. The test was performed at a controlled temperature (22.7 °C, mean value) with a mobile phase consisting of 50 % acetonitrile and 50 % HPLC water. A 50 mg/L test substance sample was analysed threefold via HPLC on a cyanopropyl (CN-) column with DAD‑detection. Calibrations were performed using eight reference items for soil and seven for sewage sludge with known log Koc values (given by the guidelines). The reference items were measured twice, once before and once after the measurement (double injection of one replicate) of the test item. Void time of the HPLC-system was determined with sodium nitrate. Two individual log Koc values for soil and for sewage sludge for the test item were derived under consideration of the first and second calibration. Finally, a mean value for soil and for sewage sludge was calculated from these individual log Koc values. Based on these data, log Koc values of 3.8 for soil and 4.0 for sewage sludge were determined (Goller, 2015).
[LogKoc: 4.0]
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.
