2-Cyclopentene-1-acetic acid, ethyl ester

Endpoint summary

Additional information

The available reliable ecotoxicity results selected for the effect of the test substance on aquatic organisms are all based on dissolved test item concentrations. The table below presents an overview of the lowest reliable toxicity data:

Trophic level	Species	Parameter	Endpoint	Value (mg/L)	Reference
Acute toxicity, freshwater
Fish	Pimephales promelas	mortality	96-h LC50	4.75	Scheerbaum, 2012
Invertebrates	Daphnia magna	mobility	48-h LC50	34.2	Noack,2012
Algae	Pseudokirchnerella subcapitata	growth rate	72-h EC50	29.2	Scheerbaum, 2012
Chronic toxicity, freshwater
Algae	Pseudokirchnerella subcapitata	growth rate	72 -h EC10	10.6	Scheerbaum, 2012

 

Reliable short-term toxicity data for freshwater organisms are available for three trophic levels: fish, aquatic invertebrates and algae. The lowest acute effect value was a 96-h EC₅₀of 4.75 mg/L observed for the effect of the test item on mortality of Pimephales promelas. Acute toxicity data are also available for invertebrates, with the lowest acute effect 48-h LC₅₀value of 34.2 mg/L for Daphnia magna and for algae, with the acute effect 72-h LC₅₀value of 29.2 mg/L for Pseudokirchnerella subcapitata.

Reliable long-term toxicity data for freshwater organisms are available for one trophic level: algae. The lowest chronic effect value was a 72-h EC₁₀of 10.6 mg/L observed for the effect of the test item on growth rate of Pseudokirchnerella subcapitata.