Registration Dossier
Registration Dossier
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EC number: 246-613-9 | CAS number: 25103-09-7
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.39 mg/L
Additional information
Isooctyl mercaptoacetate acute toxicityto Daphnia magna has been investigated. The test substance concentrations were not maintained within 80 % of the initial concentration throughout the duration of the test despite the experimental precautions used for keeping stable the test substance concentrations. At the higher test concentration, only 26 % of the initial test substance were recovered at the end of the test. However, since the test solution analyses were not carried out at the same day than the sampling day (but alter 2 days for the set at time 0 and after 4 days for the set at time 48 hours), it was not possible to exactly quantify the degradation of the test substance at the end of the test period.
The EC50were calculated using nominal concentrations. The results are :
The EC50-24h was calculated to be 0,73 mg/1 with 95 % confident interval ranging from 0,63 to 0,85 mg/1.
The EC50-48h was calculated to be 0,39 mg/1 with 95 % confident interval ranging from 0,28 to 0,53 mg/1.
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