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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Acutely harmful to aquatic algae

Key value for chemical safety assessment

EC50 for freshwater algae:
40.2 mg/L
EC10 or NOEC for freshwater algae:
3.2 mg/L

Additional information

In a GLP 72-hour static test with the green algae Desmodesmus subspicatus according to OECD guideline 201 the algae toxicity of 1-Ethyl-3-methylimidazolium acetate was investigated. Statistical evaluation of the endpoint growth rate revealed an EC50 (72h) of 40.2 mg/L, the NOEC was estimated to be 3.2 mg/L, related to the analytically verified nominal concentrations, respectively.