Registration Dossier
Registration Dossier
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EC number: 203-273-6 | CAS number: 105-13-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.064 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.642 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.006 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.642 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.321 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.032 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:
- 0.026 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) = 1.25
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_freshwater sediment
= (K_(susp-water) / RHO_(susp)) * PNEC_water * 1000
= (1.25/1150) * 0.0642 * 1000
= 0.0698 mg/kg wwt
= 0.321 mg/kg dw
PNEC marine water sediment:
K_(susp-water) = 1.25
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_marine water sediment
= (K_(susp-water) / RHO_(susp)) * PNEC_marine water * 1000
= (1.25/1150) * 0.00642 * 1000
= 0.00698 mg/kg wwt
= 0.0321 mg/kg dw
PNEC soil:
K_(soil-water) = 0.618
RHO_(soil) = 1700
Conversion factor (wwt -> dwt): 1.13
PNEC_soil
= (K_(soil-water) / RHO_(soil)) * PNEC_freshwater * 1000
= (0.618/1700) * 0.0642 * 1000
= 0.0233 mg/kg wwt
= 0.0264 mg/kg dw
Conclusion on classification
Aquatic acute toxicity
48 h, EC50 (Daphnia magna): > 100 mg/L (nominal)
72 h, ErC50 (Algae) = 141.0 mg/L (nominal)
72 h, EyC50 (Algae) = 64.2 mg/L (nominal)
96 h, LC50 (Fish): > 64.0 mg/L (nominal)
Aquatic chronic toxicity
72 h, ErC10 (Algae): 53.4 mg/L (nominal)
72 h, EyC10 (Algae): 36.4 mg/L (nomina)
Biodegradation: Readily biodegradable: 87 % after 28 days (OECD 301)
Classification according to CLP
Based on the data above, the substance has not to be classified for acute or chronic toxicity according to the 8th ATP of the Regulation (EC) No 1272/2008 (CLP).
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