Registration Dossier
Registration Dossier
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EC number: 219-143-7 | CAS number: 2372-21-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.2 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.59 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.02 µg/L
- Assessment factor:
- 100
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1.8 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 2.3 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.23 µg/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:
- 0.34 µg/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
Three acute endpoints for three different trophic levels are available. The lowest ErC50 is found for algae and is 0.059 mg/L. One chronic endpoint for algae, the most sensitive species is available, The ErC10 is 0.002 mg/L. A long-term screening study with Daphnia magna showed that invertebrates are less sensitive than algae.
The substance is readily biodegradability and has a low log Kow of 2.5.
Acute classification:
The lowest acute endpoint for algae is between 0.01 and 0.1 mg/L and leads to Category acute 1 with a M factor of 10.
Chronic classification:
The substance is readily biodegradable and the chronic ErC10 for algae is between 0.001 and 0.01 mg/L. This would lead to Category chronic 1 with a M factor of 1.
Because not all chronic endpoints are available, chronic classification is also based on acute data: with an ErC50 of 0.059 mg/L and the substance being readily biodegradable and log Kow < 4 the substance would not be classified.
Proposal for classification:
Category acute 1, M factor 10
Category chronic 1, M factor 1
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