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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:
18 mg/L
EC10 or NOEC for freshwater algae:
10 mg/L

Additional information

Sodium Fluosilicate was found to inhibit the growth of the freshwater green alga Pseudokirchneriella subcapitata after 72 hours with the following effect values (nominal test item concentrations): The EC50-values with 95 % confidence intervals for inhibition of specific growth rate (ErC50) and yield (EyC50) after 72 hours were 18.0 (16.6 – 19.6) mg/L and 14.9 (10.6 – 27.8) mg/L, respectively. The NOEC-value for inhibition of specific growth rate and yield after 72 hours was 10.0 mg/L.