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Short-term toxicity to aquatic invertebrates

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Description of key information

Acutely toxic for aquatic invertebrates.
EC50 (48 h) = 24 mg/L (Daphnia magna, OECD TG 202)
Data from the structural analogue: EC50 (48 h) = 5.2 mg/L (meas.) (Daphnia magna, OECD TG 202)

Key value for chemical safety assessment

Additional information

According to the results of an OECD guideline 202 study the test substance is acutely harmful to Daphnia magna with an EC50 (48 h) of 24 mg/L based on nominal test concentrations (Dow 1992). Since the test substance is readily biodegradable, any toxicity study without analytical monitoring is of restricted reliability. Therefore, data from the structural analogue 2-hydroxyethyl acrylate was also taken into consideration. In a study according to OECD TG 202, an EC50 of 5.2 mg/L based on measured concentrations of HEA was determined after 48 hours of exposure (MOE Japan, 1998).

Based on this result the test substance is assessed to be acutely toxic for aquatic invertebrates.