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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Acutely toxic to algae.

Key value for chemical safety assessment

EC50 for freshwater algae:
3 mg/L
EC10 or NOEC for freshwater algae:
0.29 mg/L

Additional information

In a GLP guideline study according to OECD 201 the EC50 value for algal growth was determined to be 3 mg/L and the EC10 value for algal growth was determined to be 0.29 mg/L (RCC 1999). This result is supported by two further GLP studies in which EC50 values for algal growth of 3.2 and 6.3 mg/L were determined (RCC 2006). Therefore the tested substance is considered as acutely toxic to algae.