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EC number: 689-732-5 | CAS number: 956317-36-5
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The 48-hour EC50 value was determined by empirical estimation to be >97 mg a.i./L. Additional testing to further define the EC50 value was not conducted as this would exceed OECD guideline (100mg/L). The No-Observed-Effect Concentration (NOEC) was determined to be 97 mg/L. The highest concentration producing 0% immobilization was 97 mg/L. The lowest concentration producing 100% immobilization was > 97 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 97 mg/L
Additional information
In a GLP compliant guideline, the effect of the test substance on Daphnia magna was determined. As no concentration tested resulted in a ≥50% immobilization, the 48-hour EC50 value was empirically estimated to be > 97 mg/L, the highest mean measured concentration tested. Additional testing to further define the EC50 value was not conducted since the highest nominal treatment level tested (100 mg/L) is the highest concentration required by the OECD guideline.
The No-Observed-Effect Concentration (NOEC) was determined to be 97 mg/L. The limits of test substance concentration producing 0% and 100% immobilisation are indicated. The highest concentration producing 0% immobilization was 97 mg/L. The lowest concentration producing 100% immobilization was > 97 mg/L.
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