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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

No toxic effects on microorganisms up to the limit of water solubility, read across.

Key value for chemical safety assessment

Additional information

Data on the toxicity of Fatty acids, soya, 2-ethylhexyl esters (CAS 93572-14-6) to aquatic microorganisms are not available.
The assessment was therefore based on studies conducted with the structurally similar substance Fatty acids, C16-18 and C18-unsatd., 2-ethylhexyl esters (CAS 85049-37-2), as part of a read across approach, which is in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.5. Further justification is given within the overall summary chapter 6.1 and within the analogue justification section 13.
The toxicity of Fatty acids, C16-18 and C18-unsatd., 2-ethylhexyl esters to activated sludge was tested according to OECD 209 under GLP conditions (Van der Kerken 1995). After an incubation time of 3 hours, there was no inhibition of the respiration rate observed within the tested concentration range of 6.5 to 100.2 mg/L (nominal), resulting in an EC50(3h) value of >100 mg/L.
Thus, based on the above mentioned result, and due to the structural and profile similarities of the substances, as are explained with in the overall endpoint summary 6.1 it can be concluded that no toxicological effects on aquatic microorganisms are expected up to the limit of water solubility for Fatty acids, soya, 2-ethylhexyl esters (CAS 93572-14-6).