Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

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.