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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The EC50 for growth rate inhibition (72h-ERC50) was beyond the range tested, i.e. exceeded a TWA concentration of 49 mg/L being considered to be the maximum solubility of the test item in test medium at a loading rate of 100 mg/L.

The EC50 for yield inhibition (72h-EYC50) was 30 mg/L with a 95% confidence interval ranging from 28 to 32 mg/L.

The 72h-NOEC for growth rate inhibition was 18 mg/L based on biological relevance.

The 72h-NOEC for growth rate inhibition was 7.9 mg/L based on statistical significance.

The 72h-NOEC for yield inhibition was 3.5 mg/L based on biological relevance.

The 72h-NOEC for yield inhibition was 3.5 mg/L based on statistical significance.

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
49 mg/L
EC10, LC10 or NOEC for freshwater algae:
18 mg/L

Additional information