Registration Dossier
Registration Dossier
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EC number: 222-389-8 | CAS number: 3457-61-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 3.38 µg/L
- Assessment factor:
- 50
- PNEC freshwater (intermittent releases):
- 21.7 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.338 µg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 2.17 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.687 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.069 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:
- 0.135 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
- Biodegradability: the test item is not readily biodegradable
- Log Kow = 4.40
- Short-term toxicity to aquatic invertebrates: EC50 = 4.3 mg/L
- Long-term toxicity to aquatic invertebrates: NOEC = 168.9 µg/L
- Short-term toxicity to fish: LC50 = 2.17 mg/L
- Toxicity to aquatic algae: no effect up to 100 mg/L (nominal concentration)
The following data for aquatic toxicity and environmental fate of tert-butyl cumyl peroxide are available:
Based on these data, the following aquatic hazard classification should be applied according to CLP criteria (Regulation (EC) No 1272/2008):
Long-term aquatic hazard: Chronic category 2.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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