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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

The acute toxicity of Imidazolidine-2-thione (ETU) was evaluated with Poecilia reticulata in a study performed in accordance with OECD testing guideline 203 (GLP study : no data).The LC50-96h was estimated using measured concentrations as being equal to 7500 mg/L.

Key value for chemical safety assessment

LC50 for freshwater fish:
7 500 mg/L

Additional information

The acute toxicity of ETU was evaluated with Poecilia reticulata in a study performed in accordance with OECD testing guideline 203 (GLP study : no data).

The fish were exposed to nominal test concentrations under semi-static conditions during 96 hours.

The LC50-96h was estimated using measured concentrations as being equal to 7500 mg/L.

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