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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Acutely harmful to algae.

Key value for chemical safety assessment

EC50 for freshwater algae:
27 mg/L
EC10 or NOEC for freshwater algae:
8.97 mg/L

Additional information

The toxicity of the structurally related substance CAS 118800-30-9 to aquatic algae was investigated in a GLP guideline study according to OECD 201. In this study, an acute EC50 (96h) of 27 mg/L for the growth rate of Desmodesmus subspicatus as well as an EC10 (growth rate, 72h) value of 8.97 mg/L were determined (BASF AG 98/0634/60/1, 1998). These results are considered to be adaptable for the test substance due to the structural similarities and identical core-molecules of those substances. Based on these values the test substance is considered to be acutely harmful to aquatic algae.