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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 294-589-3 | CAS number: 91744-27-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
EL50(72h) = 20.68 mg/L (nominal, loading rate) for growth rate inhibition of Pseudokirchneriella subcapitata (OECD 201)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 20.68 mg/L
Additional information
One study investigating the algal toxicity of Glycerides, castor-oil mono-, di- and tri- (CAS 91744-27-3) is available. The study was performed according to GLP and OECD guideline 201 using Pseudokirchneriella subcapitata as test organism (Bak 2018). Loading rate WAFs in the range of 4.69 to 150 mg/L were tested. Based on nominal concentrations, the 72h-EL50 value for growth rate inhibition is determined to be 20.68 mg/L. The EL10 value is lower than the lowest concentration tested of 4.68 mg/L. However, the NOELr/ EL10 of < 4.69 mg/L is not considered to be of biological relevance. The 2 lowest concentrations showed significant differences to the control; however, the growth of both concentrations were still higher than 16-fold. This indicates that the unusual high growth rate within the control (increased by a factor of 127.4 within the 72-hour test period) generated this statistical artifact. Thus, the 72h-NOELr/EL10 value is not considered to be reliable and is not used for the hazard assessment of the test substance.
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.
