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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The ErC50 is above the maximum solubility of 14 mg/l. The EbC50 is 13.7 mg/l. The corresponding EC10 values are 8.52 mg/l (ErC10) and 0.49 mg/l (EbC10). The estimated 96-hr EC50 value for algae is 31,3 mg/l (ECOSAR v1.10), which is above the maximum solubility of 14 mg/l. The estimated chronic value is 8.6 mg/l, the corresponding NOEC is 6.0 mg/l which is close to the measured ErC10 of 8.52 mg/l.

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
8.52 mg/L

Additional information

The ErC50 from an OECD 201 test is above the maximum solubility of 14 mg/l. The EbC50 is 13.7 mg/l. The corresponding EC10 values are 8.52 (ErC10) and 0.49 mg/l (EbC10)..

The aquatic toxicity was also estimated using the ECOSAR model v1.10 included in the EpiSuite models of US-EPA. The estimated 96-hr E50 value for algae is 31,3 mg/l. Since this value is higher than the maximum measured water solubility of 14.7 mg/l, the substance may not be bioavailable enough to exert acute toxicity.

The estimated chronic value is 8.6 mg/l, the corresponding NOEC is 6.0 mg/l which is close to the measured ErC10 of 8.52 mg/l.