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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The EC50 value for specific growth rate after 72h was 39 mg/L, with a NOEC of 6.25 mg/L, based on data from a OECD 201 in D.subspicatus.

Key value for chemical safety assessment

EC50 for freshwater algae:
39 mg/L
EC10 or NOEC for freshwater algae:
6.25 mg/L

Additional information

The effect of the test item on the growth of Desmodesmus subspicatus has been investigated over a 72-Hour period and gave the following results:

Growth Rate: EC50: 39 mg/L* ; NOEC: 6.25 mg/L; LOEC: 12.5 mg/L

Yield: EC50: 11 mg/L (95% confidence limits: 10 - 13 mg/L); NOEC: 6.25 mg/L; LOEC: 12.5 mg/L

* It was not possible to calculate 95% confidence limits for the ErL50 value as the data generated did not fit the models available for the calculation of confidence limits.