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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 271-233-5 | CAS number: 68526-84-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
(Q)SAR estimations for the registered substance resulted in a 96 hr EC50 of 4.589 mg/L; and chronic value (ChV) to green algae of 1.636 mg/l, equivalent to a NOEC of 1.157 mg/l.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 4.589 mg/L
- EC10 or NOEC for freshwater algae:
- 1.157 mg/L
Additional information
Experimental long-term toxicity data for the registered substance are not available. A chronic aquatic toxicity value was calculated using the neutral organics structure-activity relationship in the ECOSAR computer program of EPISuite; the results of which are adequate for the purpose of classification and labelling and/or risk assessment. Validity and applicability of the QSAR are described in a document attached as background material to the QSAR endpoint study record.
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.
