Registration Dossier
Registration Dossier
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EC number: 204-559-3 | CAS number: 122-63-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.004 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.036 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.036 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 0.1 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.08 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.008 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:
- 0.014 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The PNEC derivation was as follows justified:
PNEC freshwater sediment:
K_(susp-water) = 5.56
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_freshwater sediment
= (K_(susp-water) / RHO_(susp)) * PNEC_water * 1000
= (5.56/1150) * 0.00359 * 1000
= 0.0173 mg/kg wwt
= 0.0798 mg/kg dw
PNEC marine water sediment:
K_(susp-water) = 5.56
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_marine water sediment
= (K_(susp-water) / RHO_(susp)) * PNEC_marine water * 1000
= (5.56/1150) * 0.000359 * 1000
= 0.00173 mg/kg wwt
= 0.00798 mg/kg dw
PNEC soil:
K_(soil-water) = 5.79
RHO_(soil) = 1700
Conversion factor (wwt -> dwt): 1.13
PNEC_soil
= (K_(soil-water) / RHO_(soil)) * PNEC_freshwater * 1000
= (5.79/1700) * 0.00359 * 1000
= 0.0122 mg/kg wwt
= 0.0138 mg/kg dw
Conclusion on classification
Aquatic acute toxicity:
96 -h LC50 (Fish) = 3.59 mg/L (measured)
48 -h EC50 (Daphnia magna) = 5.4 mg/L (nominal)
72 -h EC50 (Algae) = 16.6 mg/L (measured)
Aquatic chronic toxicity
72 h, EC10 (Algae): 9.98 mg/L (measured)
Biodegradation:
Readily biodegradable: 72% of biodegrdation (maximum on day 21) according to OECD 301D
Classification and labelling:
Based on the current data, the test substance is not considered to be classified for acute or chronic toxicity according to Regulation (EC) No 1272/2008, as amended for the tenth time in Regulation (EC) No 2017/776.
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