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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 211-720-1 | CAS number: 691-37-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
EC50 > 0.0931 mg/L based on biomass (OECD 201)
NOEC > 0.0931 mg/L based on biomass (OECD 201)
EC50 > 0.0931 mg/L based on growth rate (OECD 201)
NOEC > 0.0931 mg/L based on growth rate (OECD 201)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 0.093 mg/L
- EC10 or NOEC for freshwater algae:
- 0.093 mg/L
Additional information
The key study was performed according to GLP and OECD Guideline 201. Analysis of test solution concentration showed that the measured value was 78 % of nominal at the start of exposure and, analysis of test culture concentration, the measured value was 0.5 % of nominal. Decreased concentration was attributed to volatilization at the time of test solution preparation and during exposure.
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.
