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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The acute toxicity of Imidazolidine-2-thione (ETU) was evaluated with Daphnia magna in a study performed in accordance with OECD testing guideline 202 (GLP study : no data).The LC50-48h was estimated using measured concentrations as being equal to 26.4 mg/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
26.4 mg/L

Additional information

The acute toxicity of ETU was evaluated with Daphnia magna in a study performed in accordance with OECD testing guideline 202 (GLP study : no data).

The young daphnids were exposed to nominal test concentrations (no data) under semi-static conditions during 48 hours.

The LC50-48h was estimated using measured concentrations as being equal to 26.4 mg/L.

Temperatures, pH range and dissolved oxygen concentration were not reported in this study, we consider the data on the guideline requirements.