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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

72 hr EC50 cell number (Pseudokirchnerella subcapitata) 739 mg/l (nominal). 
72 hr NOEC growth rate (Pseudokirchnerella subcapitata) 12 mg/l (nominal).

Key value for chemical safety assessment

EC50 for freshwater algae:
739 mg/L
EC10 or NOEC for freshwater algae:
12 mg/L

Additional information

Toxicity to algae and cyanobacteria has been tested with Pseudokirchnerella subcapitata over a 72 hour period at 100 mg/l. The 72h-EC50 (cell number) was 739 mg/l (nominal) and the 72h NOEC (growth rate) was 12 mg/l. The measured concentrations were higher than 80% of the nominal concentrations..