Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

No adverse effects up to the limit of water solubility (0.4 mg/L measured in aqua dest; 0.66 mg/L in fish test medium) for Oncorhynchus mykiss (OECD 203).

No adverse effects up to the limit of water solubility (0.4 mg/L measured in aqua dest; 0.125 mg/L in M4 test medium) for Daphnia magna (OECD 202).

No adverse effects up to the limit of water solubility (0.4 mg/L measured in aqua dest; 0.035 mg/L in algae test medium) for Selenastrum capricornutum (OECD 201).

Activated sludge was not inhibited based on a short term respiration test at 100 mg/L (nominal). Therefore disturbances in the biodegradation process of a sewage treatment plant is not anticipated for 2-ethylhexyl benzoate.

Additional information

Acute toxicity of 2 -ethylhexyl benzoate (CAS No. 5444 -75 -7) to aquatic organisms was investigated on three trophic levels (algae, invertebrates and fish). In all available short-term toxicity tests, no adverse effects occurred in the range of the water solubility of the substance (0.4 mg/L measured in aqua dest, 0.035 - 0.66 mg/L in the aquatic toxicity test media).

Activated sludge was not inhibited based on a short term respiration test at 100 mg/L (nominal). Therefore disturbances in the biodegradation process of a sewage treatment plant is not anticipated for 2-ethylhexyl benzoate.

No data are available for the long-term toxicity of the substance towards invertebrates and fish. A long-term toxicity test with Daphnia magna according to OECD guideline 211 was initiated, but was dicontinued due to the fact that desired concentrations could not be reached and maintained. The use of dispersants led to toxicity that could not be explained by toxicity of the substance, but was most likely related to the specific dispersant (Envigo 2018).

The starting point for risk assessment will be the solubility level of the substance, 0.4 mg/L