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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The lowest EC10 is for cell number (yield) which is 0.16 mg/L. The EC10 for growth rate is 0.70 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
0.16 mg/L

Additional information

The EC50 for growth rate reduction (ERC50: 0-72h) was beyond the range tested, i.e. exceeded a TWA concentration of 9.60 mg/l. The EC50 for yield inhibition (EYC50: 0-72h) was 2.4 mg/l with a 95% confidence interval ranging from 0.53 to 10 mg/l. The NOEC for growth reduction and yield inhibition was 0.064 mg/l. In this study the EC10 provides the best statistical indication of toxicity. The lowest EC10 is for cell number (yield) which is 0.16 mg/L. The EC10 for growth rate is 0.70 mg/L.