Registration Dossier
Registration Dossier
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EC number: 422-310-9 | CAS number: 114772-53-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The studies gave conflicting results.
According to the basis for the effect choosen, for Raphidocelis subcapitata the EC50 (72 h) value ranges between 1,77 and 2,01 mg/l; the NOEC is 0,66 and mg/l.
According to the basis for the effect choosen, for Selenastrum capricornutum the EC50 (72 h) value ranges between 0,49 and 0,87 mg/l; the NOEC ranges between 0,088 and 0,7 mg/l.
Key value for chemical safety assessment
Additional information
The reliability of the studies was judged as not assignable (score 4) because of the lack of study details. This would represent an obstacle to use the studies results for the classification and labelling (C&L) of the substance. However, the studies were previously presented within the context of a regulatory framework and the lack of details available to us does not necessarily mean that they have to be discarded.
Therefore, even with the above mentioned limitations, the studies were considered in order to define the C&L of the substance.
In absence of criteria for choosing the most reliable study for C&L, in case of conflicting results the study providing data of higher concern was used to provisionally define the C&L of the 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.
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