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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Under the conditions of the key study (OECD 201 guideline method conducted according to GLP) the 72 hour NOELR is 100 mg/l.  

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

The key study (Migchielsen, 2004) was conducted according to te OECD 201 guideline under conditions of GLP. The study was performed on Selenastrum capricornatum (now classified as Pseudokirchnerella subcapitata) in freshwater over a 72 hour exposure period. The study was conducted as a limit test using a single loading rate of 100 mg/l.

Based upon the growth rate of the algae the 72 hour NOELR was determined to be 100 mg/l.