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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 218-058-2 | CAS number: 2044-56-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Readily biodegradable according to OECD criteria: 95% after 28 days based on CO2 evolution (OECD 301 B).
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Since no reliable biodegradability tests are available for C12AS Li (CAS 2044-56-6), in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5 a read-across to another structurally related category member was conducted. Read-across data from another C12 AS homologue C12AS Na (CAS 151-21-3) were used. Biodegradation rate will be similar for alkyl sulfates of the same carbon chain length and it can be assumed that the effects of the counter-ion can be neglected.
A GLP study according to OECD guideline 301 B is available for C12AS Na homologue (CAS 151-21-3) (Brunswik-Titze 2005). In this key study, activated, non-adapted domestic sludge was used as inoculum and the initial concentration of the test substance was 20 mg/L as DOC. Based on the CO2 evolution measurements, the biodegradation reached 95% after 28 days and the 10-day window was passed. The substance therefore can be considered as readily biodegradable. Another, supporting study is available for CAS 151-21-3 (Börner 1996). This GLP test was performed according to OECD 301 D guideline using effluent of domestic sewage treatment plant as inoculum. Two concentrations of the substance were tested: 2 mg/L and 5 mg/L. By measuring O2 consumption, the substance was evaluated to be readily biodegradable. On day 28 biodegradation reached 97% and 94% for the concentrations of 2 mg/L and 5 mg/L respectively, passing the 14-day window in both cases.
Due to structural and property similarities with the tested category members it can be concluded that the above results apply also to C12AS Li (CAS 2044-56-6) and the substance can be regarded as readily biodegradable.
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.
