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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Key value for chemical safety assessment

EC50 for freshwater algae:
60 mg/L
EC10 or NOEC for freshwater algae:
10 mg/L

Additional information

In the Klimisch 1 GLP study from Kimmel (2013) the toxicity of Sulfosuccinic (FA C12-18)E, 2Na to Desmodesmus subspicatus was determined in a static 72-Hour Algal Growth Inhibition Test. The test was performed according to OECD 201 and EU Method C.3. The nominal concentrations of the test item of6.25, 12.5, 25, 50 and 100  mg test item/L were tested in parallel with a control. Dose verification analysis was performed . The measured concentrations of the test item were between 92 and 108 of the nominal values at the start of the test and between 98 and 1ß4% at the end of the test. therefore, the biological results were based on nominal concentrations. In order to determine the growth of the cultures, the cultures were measured with the fluorescent method . The cell density was determined at 0, 24, 48 and 72 hours. The growth of the control cultures fulfilled the validity criteria from OECD 201 (2006). The 72 -hour ErC10 and ErC50 are 10 and 60 mg test item/L based on nominal concentrations.

This information is considered to be relevant and reliable for the further risk assessment.