Registration Dossier
Registration Dossier
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EC number: 309-832-1 | CAS number: 101227-09-2
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 (EU Method C.2).
Key value for chemical safety assessment
Additional information
One GLP Guideline study according to the EU Method C.2 is available investigating the short-term effects of fatty acids, C16-18, 2-hexyldecyl esters (CAS 101227-09-2) to aquatic invertebrates (Wierich, 1998). The water flea Daphnia magna was exposed to Water Accommodated Fractions (WAF) of nominal 1000 and 3000 mg/L under static conditions. After 48 h no effects on mobility of D. magna were recorded resulting in an EL50 > 1000 mg/L based on the nominal concentration and an EL50 > 1.034 mg/L based on the measured concentration using GC analysis. The highest test concentration was not taken into account for the assessment since particles floated on top of the water surface. Since both concentrations exceeded the water solubility by a factor > 1000 it is justifiable to use only the test substance concentration of nominal 1000 mg/L and the others were disregarded. Based on this result it can be concluded that no toxicological short-term effects on aquatic invertebrates are expected up to the limit of water solubility for fatty acids, C16-18, 2-hexyldecyl esters.
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