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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

EC0 = 300 mg/L
EC10 = 380 mg/L
EC50 > 1000 mg/L
EC100 > 1000 mg/L

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
380 mg/L

Additional information

The influence of the test item on the growth of Scenedesmus subspicatus was investigated in a 96 hours toxicity test according to DIN 38412 and OECD Guideline No. 201. The test organismus, Scenedesmus subspicatus was cultivated for several generations in nutrient solution in the presence of different concentrations of the test substance. The chronic effect concentration of the test substance on algae was determined by measuring the turbidity of the algal suspensions after 96 hours. The following effect concentrations was determined:

EC0 = 300 mg/L
EC10 = 380 mg/L
EC 50 >1000 mg/L
EC100 >1000 mg/L