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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

Tetrabutane, dest. is not acutely harmful for daphnids.
EC50 (48 h, static) ≥ 77 µg/L (measured)/ which is the solubility limit of the test substance under the conditions of the test (Daphnia magna, 92/69/EEC part C2)

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.077 mg/L

Additional information

Tetrabutan, dest. was tested in acute toxicity test with daphnids (Daphnia magna Straus) under static conditions according to the guideline EU Method C.2 (Acute Toxicity for Daphnia). The test was conducted as limit test. In order to attain the solubility limit of the test substance, which is poorly soluble in water, 1 g Tetrabutan, dest./L was stirred for 18 h and undissolved test substance was then removed by filtration. No loss of test substance over the test period was recorded by analytical determination with gas chromatography, the concentration value given is therefore the initially measured value. No effects on the exposed daphnids were recorded, thus the EC0≥ 77 µg/L and the EC50 > 77 µg/L which constitutes the solubility limit of tetrabutan, dest. under the conditions of the test.