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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

LL50 (96h) = 39 mg/L nominal (C. carpio, OECD 203, semi-static)

Key value for chemical safety assessment

Additional information

One study investigating the short-term toxicity of Multi constituent ester of pentaerythritol 2-ethylhexanoate to freshwater fish is available. The GLP study was conducted under semi-static conditions according to OECD guideline 203 using Cyprinus carpio as test organism (Migchielsen, 2013). All test solutions were individually prepared. Preparation included a one-day magnetic stirring period to ensure reaching maximum dissolution. The resulting aqueous mixtures that contained a floating layer were subsequently left to settle overnight. The Water Accommodated Fraction’s (WAFs) were then collected by means of siphoning the clear middle fraction and used for testing. A final test was performed based on the results of three preceding tests. Seven carp per test group were exposed for 96 hours to WAFs prepared at Multi constituent ester of pentaerythritol 2-ethylhexanoate loading rates of 13, 23, 41, 72 and 129 mg/L. Due to the complexitiy of the substance, analytical monitoring was not performed, but instead a semi-static test performance was applied in order to maintain constant test substance concentrations throughout the test. Multi constituent ester of pentaerythritol 2-ethylhexanoate induced no lethal effects in carp at or below a WAF prepared at a loading rate of 23 mg/L (LL0). The 96h-LL50 was determined as 39 mg/L.