Registration Dossier
Registration Dossier
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EC number: 283-585-7 | CAS number: 84682-23-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 12 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 120 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.2 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 512 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 51.2 mg/kg sediment dw
- Assessment factor:
- 1 000
- 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:
- 102 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The environmental classification of T001159 is currently not harmonized according to the CLP Regulation (EC) 1272/2008. Based on available acute aquatic toxicity data, the lowest valid effect concentration for freshwater aquatic organisms is 12 mg/L (EC50 for algae).
Based on the available acute data, the substance should not be classified for acute toxicity following Annex I, table 4.1.0 a of the CLP regulation (there are no acute values ≤ 1 mg/L).
In the algal growth inhibition study, the NOErC for algae was biologically significant at 1 mg/L respectively. No other long-term values are available. We compared this chronic effect concentration for algae combined with environmental fate against the lowest acute effect concentration of the 3 trophic levels (EC50 of 12 mg/l for algae) and took the most conservative result forward for classification, following Annex I, table 4.1.0 b of the CLP Regulation. Taking into account the available chronic and acute data, as well as the fact that the substance is not rapidly degradable and its log Kow is < 4, the substance should be classified as Aquatic Chronic 2 under the CLP Regulation.
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