Registration Dossier
Registration Dossier
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EC number: 237-410-6 | CAS number: 13775-53-6
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The 72-h ErC50 is 8.8 mg/L and the 72-h NOErC is 1 mg/L in the freshwater species Pseudokirchneriella subcapitata (tested as: Selenastrum capricornutum), this corresponds to a 72-h ErC50 of 4.8 mg/L and a 72-h NOErC of 0.54 mg/L based on fluoride. The 72-h ErC50 of 4.8 mg F/L is used in the assessment.
Key value for chemical safety assessment
Additional information
One GLP-compliant guideline study (OECD 201) in which the concentrations were analytically verified is available for toxicity in algae. The 72-h EC50 for biomass integral and growth rate were 3.2 and 8.8 mg/L, respectively, in the freshwater species Pseudokirchneriella subcapitata (tested as: Selenastrum capricornutum). The 72-h NOEC, based on biomass integral and growth rate were both 1.0 mg/L (Solvay, 2008b). It was a static test and analytical monitoring has been performed.
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