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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

Tetrabutan is not harmful to daphnids by  long-term exposure.
NOEL 100 mg/L (saturated solution) under the conditions of the test (OECD 211).

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater invertebrates:
100 mg/L

Additional information

Tetrabutane (Industrial) was tested for long-term toxicity with daphnids (Daphnia magna Straus) under semi-static conditions according to the guideline OECD 211 (Daphnia magna reproduction test). The test was conducted as a limit test in a saturated solution of Tetrabutane with a nominal loading concentration of 100 mg/L. The achieved concentration of Tetrabutane in the saturated solution was not determined, as recoveries of the test substance were below the LOQ of 20 µg/l. No statistically or biologically significant effects were observed. The No Observed Effect Loading (NOEL) and the Lowest Observed Effect Loading (LOEL) were assessed as 100 mg/l (saturated solution) and > 100 mg/l (saturated solution), respectively .