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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Key value for chemical safety assessment

EC50 for freshwater algae:
1.9 mg/L
EC10 or NOEC for freshwater algae:
0.106 mg/L

Additional information

- Effect of KS-235 on the growth of the green alga Selenastrum capricornutum (OECD Guideline No. 201)

ErC10 = 0.68 mg.l-1

ErC50 = 1.9 (1.5 - 2.4) mg.l-1

ErC90 = 5.1 mg.l-1

EbC10 = 0.32 mg.l-1 (95% confidence limits = 0.315 - 0.561 mg.l-1*)

EbC50 = 0.82 mg.l-1 (95% confidence limits = 0.561 - 1.00 mg.l-1*)

EbC90 >1.89 mg.l-1

* range between tested concentrations

NOEC was determined to be 0.106 mg/l