Registration Dossier
Registration Dossier
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EC number: 226-122-6 | CAS number: 5285-60-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.187 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.019 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 23.2 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 2.06 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.21 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:
- 0.411 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 1 mg/kg food
- Assessment factor:
- 300
Additional information
Conclusion on classification
Short-term toxicity results for fish, Daphnia and algae are available for the substance. The 96h-LC50 for fish was >0.61 mg/L, no effects were observed. The 48h-EC50 for Daphnia magna was 0.21 mg/L. The 72h-ErC50 and 72h-ErC10 for algae are 0.187 mg/L and 0.081 mg/L, respectively. The substance is not readily biodegradable, Log Kow = 5.4.
Short-term (acute) aquatic hazard
According to Table 4.1.0(a) of the CLP regulation, the substance should be classified as Acute Cat. 1, since the EC50 of both algae and Daphnia are <=1 mg/L. The M factor is 1.
Long-term (chronic) aquatic hazard
The only available chronic value is the 72h-ErC10 for algae. The chronic classification has to be determined based on this chronic value according to Table 4.1.0 (b) (i) (as the substance is not readily biodegradable) and based on the available EC50 value for Daphnia and environmental fate data according to Table 4.1.0 (b) (iii). The most stringent outcome is leading:
- As the ErC10 of algae is <= 0.1 mg/L, the substance needs to be classified as Chronic Cat. 1 based on this available chronic value.
- As the EC50 value for Daphnia is <= 1 mg/L, and the substance is not rapidly biodegradable and has a Log Kow > 4, the substance needs to be classified as Chronic Cat. 1 based on this key value also.
It is therefore concluded that the substance needs to be classified as Acute Cat. 1 and Chronic Cat. 1 according to the CLP Regulation. Corresponding M factors are 1 for both acute and chronic toxicity.
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