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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.


 


In a test according to OECD 211  Daphnia magna were exposed (10 replicates of a single daphnid per group) to a solution of the substance at a nominal concentration of 100% v/v saturated solution (actual 24-h TWA 0.014 mg/L) for a period of 21 days. The test solutions were renewed daily throughout the test. No effects on moratlity/immobility, daphnia length and reproduction were seen at a 100% saturated concentration. Therefore it can be concluded that the NOEC is 0.014 mg/L. 

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).


In a test according to OECD 211 no effects on mortality/immobility, daphnia length and reproduction were seen at a 100% saturated concentration (measured TWA 0.014 mg/L). Therefore it can be concluded that the NOEC is 0.014 mg/L. 


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.