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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

EC50: 72 mg/L

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
72 mg/L

Additional information

 In the Klimisch 1 GLP study from Kimmel (2013) the acute toxicity of Reaction products of ricinoleic acid with 2-aminoethanol and maleic acid and sodium hydrogensulfite on Daphnia magna was determined in an 48 hour static test according to OECD 202 and EU method C.2. The test was performed with concentrations of 15.56, 31.16, 62.25, 124.5 and 249 mg/L (corresponding to 6.25, 12.5, 25, 50 and 100 mg solid content/L) and a blank control. Four replicates with 5 daphnids each were set up. After 48 hours 0, 0, 0. 0, 0 and 95 % immobilization was observed in the control and at test concentrations of 6.25, 12.5, 25, 50 and 100 mg solid content/L, respectively. Analytical measurements confirmed that the test solutions were correctly dosed and stable throughout the exposure period. Therefore the data were evaluated based on nominal concentrations. The EC50 is 72 mg as/L, the NOEC is 50 mg as/L.

The results are considered relevant and reliable for the risk assessment.