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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 433-240-3 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72h-EC50 (Scenedesmus subspicatus, biomass /growth rate) > 0.05 mg/L (measured), 2h-EC50 (Scenedesmus subspicatus, biomass /growth rate) > 100 mg/L (nominal; supersaturated solution), 72h-NOEC (Scenedesmus subspicatus, biomass /growth rate) >= 0.05 mg/L (measured), 72h-NOEC (Scenedesmus subspicatus, biomass /growth rate) >= 100 mg/L (nominal; supersaturated solution)
Key value for chemical safety assessment
Additional information
Toxicity to algae was investigated in a reliable key study according to OECD 201 and in compliance with GLP (RCC, 2000, RL2). As the test item was highly insoluble in water, a limit test was performed with a supersaturated solution prepared at 100 mg/L test item and filtered through 1.2 μm glass wool filter. Test concentrations were analytically verified. During exposure, no adverse effect on the biomass production or growth rate was observed. In conclusion, the test item showed no sign of toxicity to algae above the maximum water solubility of the test item. Derived effect concentrations were: 72h-EC50 > 0.05 mg/L (measured), 72h-EC50 > 100 mg/L (nominal), 72h-NOEC >= 0.05 mg/L (measured) and 72h-NOEC >= 100 mg/L (nominal).
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.
