Registration Dossier
Registration Dossier
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EC number: 939-200-6 | CAS number: -
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The 48-hour NOEC for Daphnia magna was found to be 216 mg/L and the EC50 was determined to be 540 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 540 mg/L
Additional information
An OECD 202 Daphnia magna acute immobilisation was conducted for the test substance sodium isobutyrate solution. Daphnia neonates were exposed to the test substance at nominal concentrations of 27, 54, 108, 216, 433, and 865 mg/L. The test was static with an exposure duration of 48 hours at a temperature of 20.5 ± 1oC and a light rhythm of 16 hours light: 8 hours darkness.
Measured concentrations were found to be within ± 20% of nominal values. The 48 -hour NOEC was determined to be 216 mg/L and the 48 -hour EC50was calculated to be 540 mg/L.
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