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Short-term toxicity to aquatic invertebrates

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Description of key information

No acute toxicity of the category members of the Long Chain Alcohol Esters to aquatic invertebrates up to the limit of water solubility.

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Additional information

Two studies investigated the effects of the category members of the Long Chain Alcohol Esters towards freshwater invertebrates. In a study by Wierich, 2001 the short-term effects of the category member fatty acids, C16-18, C12-18-alkyl esters (CAS: 95912-87-1) to the aquatic invertebrate Daphnia magna were investigated. The study was performed according to OECD guideline 202. The test was conducted using a water accommodated fraction (WAF) with a nominal concentration of 100 mg/L. As a result of this study an EC50 (48 h) > 100 mg/L (nominal) was determined. Measured concentrations were in the range of 0.1 – 0.2 mg/L or even below the detection limit. Thus, no effects below the limit of water solubility were observed. This finding is supported by a test with the analogue substance 2-ethylhexyl oleate (CAS: 26399-02-0). This study was performed according to the EU method C.2 and resulted in an EC50 (48 h) > 100 mg/L (nominal, filtered) (Kuech, 1995). Also in this study no effects below the limit of water solubility were observed. Based on the results and considering the category (for CAS: 95912-87-1) and analogue approach (for CAS: 26399-02-0) it can be concluded, that the category members of the Long Chain Alcohol Esters will not have any short-term effects to aquatic invertebrates.