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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 208-873-1 | CAS number: 544-60-5
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
In a read across-48 h acute toxicity test with 9-octadecenoic acid sodium salt exposed to daphnia, the EC50 value was determined to be 24 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 24 mg/L
Additional information
In a read across study according to OECD guideline No. 202 the short-term toxicity to daphnia of 9-octadecenoic acid sodium salt (CAS number 143 -19 -1) was assessed. The test duration was 48 h. The LC50 based on immobilization was determined to be 24 mg/L. Additionally, a publication is available in which the LC50 (24 h) value based on mobility for 9-octadecenoic acid sodium salt (CAS number 143 -19 -1) determined in an acute toxicity study in daphnia (Daphnia magna) is given as 4.2 mg/L (original source: Huber, (1991). Untersuchungen über die Elimination, den biologischen Abbau und die aquatische Toxizität von Seifen in Wasch-und Reinigungsmitteln. Bundesministerium für Forschung und Technologie. Kfk OTWT F ozwa 86:731ff). As the test duration used to determine this value was only 24 hours instead of 48 hours, this study record was chosen to be the supporting study.
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.
