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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Most likely not acutely toxic to invertebrates up to the maximum water solubility.

Key value for chemical safety assessment

Additional information

In a GLP guideline study following OECD 202 and OECD 23 waterflea (Daphnia magna) were exposed for 48 hours to a saturated solution of tris-2 -ethylhexylamine (limit test with a nominal concentration of 100 mg/L). Analytical monitoring could not be performed since the limit of quantification was above the water solubility of approx. 0.002 mg/L. Undissolved test material was not removed. The daphnids were exposed to the total load of the test substance using an organism chamber in the test vessel. No adverse effects on the test organisms were observed. Based on nominal concentrations, the 48-h EC50 for effects on Daphnia is > 100 mg/L (BASF SE, 2010). Additional studies are available (BASF, 1984 a, b; BASF, 2007) which were not considered due to physical effects (daphnids were entrapped at the surface of the test vessels).