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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 440-520-9 | CAS number: 204583-39-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acutely not harmful to aquatic algae. No acute toxic effects occur within the range of solubility.
Key value for chemical safety assessment
Additional information
The toxicity of the substance to algae was tested in a guideline study following OECD 201 (RCC Ltd. 2002d). Due to the low water solubility of the test item, a supersaturated dispersion of the test item with a loading rate of 100 mg/L was tested. The dispersion was filtered and the undiluted filtrate containing a maximum concentration of dissolved test item was used as test medium and algal cells of the species Desmodesmus subspicatus were exposed for 72 hours. The growth rate of the algae was determined by a cell counter. Based on the algal growth rate and the biomass an EC50 >100 mg/l (NOEC>100 mg/l) based the loading rate was determined.
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.
