Registration Dossier
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EC number: 284-868-8 | CAS number: 84988-79-4
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
No effects up to the limit of water solubility for Daphnia magna (EU guideline 92/69/EWG)
Key value for chemical safety assessment
Additional information
One short-term aquatic invertebrate study is available for toxicity of Fatty acids, C16-18 and C18-unsaturated isobutyl esters (CAS No. 84988-79-4).
The key study conducted with Fatty acids, C16-18 and C18-unsaturated isobutyl esters (CAS No. 84988-79-4) was performed as a limit test according to EU guideline 92/69/EWG and GLP (Wierich, 1995). The test organism Daphnia magna was exposed to the test substance in a static system for 48 hours. Three different methods were applied for the preparation of test solutions: 1) direct addition to nominal 100 mg/L without separation of undissolved test material, 2) direct addition to nominal 100 mg/L followed by a separation of undissolved test material and 3) 3 to 5 fold saturation concentration without separation of undissolved material. Immobilisation was observed only in the test solutions prepared using the first method, and was therefore probably due to physical effects caused by the large amount of undissolved test material present in the test solution. With separation of undissolved test material and with 3 to 5 fold saturation no negative effects were observed. It can be concluded that the test substance had no toxic effects on Daphnia magna up to the limit of water solubility. An EL50 of > 100 mg/L is reported.
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