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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

ErC50 = 370 mg/L (the concentration inhibiting the algal growth rate by 50%.)
EbC50 = 220 mg/L (concentration inhibiting the biomass integral by 50%)

Key value for chemical safety assessment

EC50 for freshwater algae:
370 mg/L
EC10 or NOEC for freshwater algae:
10 mg/L

Additional information

The following results were determined for the test item (species: Daphnia magna):

NOEC (72 h): 10 mg/L

ErC50 (72 h): 370 mg/L

EbC50 (24 h): 220 mg/L

For the main study eight concentrations ranging from 10 to 1000 mg/L were used. From the measured absorption of each treatment the growth rate and the area under the growth curve were determined.