Registration Dossier
Registration Dossier
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EC number: 257-077-0 | CAS number: 51240-95-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.33 µg/L
- Assessment factor:
- 100
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.033 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 127.6 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.66 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.16 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.33 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
Conclusion on classification
Acute classification
For fish, Daphnia and algae all endpoints are above the water solubility limit.
Chronic classification
1,1,3,3-Tetramethylbutyl peroxyneodecanoate is not readily biodegradable, and the measured log Kow is > 6.5. Chronic data available is 72 h ErC10 algae, 104.29 mg/L, loading and a 21d NOEL for Daphnia of 10 mg/L loading. When chronic data for less than 3 trophic levels are available the classification is assessed using both the existing chronic and acute data, and the most stringent outcome is chosen.
Based on chronic data: (72 h EL10 algae, 104.29 mg/L and 21 d NOEL Daphnia > 10 mg/L): No classification
Based on acute data (All endpoints > water solubility limit): No classification
Category chronic 4 evaluation - Substance is poorly water soluble, with no acute toxicity recorded up to the water solubility, is not rapidly degradable and the log Kow > 4. However the available chronic toxicity NOEC > water solubility and 1 mg/L , thus it does not fit into this category.
Most stringent outcome: None
Overall classification: None
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