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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The 72 h EC 50 (yield and growth) for Desmodesmus subspicatus to Ammonium perrhenate was 103.77 and 139.57 mg/L respectively. LOEC and NOEC for both yield and growth were 100 and 50 mg/L respectively.

Key value for chemical safety assessment

Additional information

Evonik Stockhausen (2010) is a GLP compliant, guideline study considered suitable for use as the key study for this endpoint. The study was conducted as a 72 -hour static test. Five test concentrations were used in the study, 6.25, 12.5, 25, 50, 100 mg/L. Recovery rates were between 100% and 104% of nominal concentrations. Test results are therefore based on nominal concentrations.