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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The 72h-EC50 of the algal growth inhibition is 42 mg/l. The NOEC is 4.6 mg/l.

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
42 mg/L
EC10, LC10 or NOEC for freshwater algae:
4.6 mg/L

Additional information

The OECD 201 guideline states that the use of average specific growth rate for estimating toxicity is scientifically preferred to yield. The EC50 and NOEC should be taken forward in a risk assessment.