Registration Dossier
Registration Dossier
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: 500-239-5 | CAS number: 68937-90-6
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6) does not meet the OECD criteria for ready biodegradability (<10 %).
Key value for chemical safety assessment
Additional information
Three guideline studies investigating the ready biodegradability of Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6) are available. The first study was conducted according to the "ASTM D 5864-95 Standard Test Method for Determining Aerobic Aquatic Biodegradation of Lubricants or Their Components" (Batch Processing Sturm Test) using activated sludge which was pre-adapted to the test substance. Due to the use of pre-adapted sludge the test cannot fulfill the OECD criteria for readily biodegradability. Nevertheless, as the biodegradation of the test substance was < 10 % at test termination after 28 days, Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6) is in any case determined to be not readily biodegradable under test conditions according to OECD criteria (O'Leary, 1999). A second GLP, OECD 301B study using domestic non-adapted activated sludge once again confirmed that the biodegradation of the test substance was < 10 % at test termination after 28 days (Kelly, 2002). Finally, a third test with seawater according to OECD 306 corroborates the results of the above mentioned ASTM test, showing a degradation of 11 % after 28 days (Andersen, 2005).
Thus, Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6) is not readily biodegradable under conditions tested according to OECD criteria.
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.
