Registration Dossier
Registration Dossier
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EC number: 241-769-4 | CAS number: 17791-81-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.1 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.01 mg/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:
- 0.359 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.036 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:
- 0.013 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
PNEC freshwater sediment:
K_(susp-water) = 0.9 m3/m3
RHO_(susp) = 1150 kg/m3
Conversion factor (wwt -> dwt): 4.6
PNEC_freshwater sediment = (K_(susp-water)/ RHO_(susp))*PNEC_water * 1000
= (0.9/1150)* 0.1 *1000
= 0.0782 mg/kg wwt
= 0.359 mg/kg dwt
PNEC marine water sediment:
K_(susp-water) = 0.9 m3/m3
RHO_(susp) = 1150 kg/m3
Conversion factor (wwt -> dwt): 4.6
PNEC_marine water sediment = (K_(susp-water)/ RHO_(susp))*PNEC_marine water* 1000
= (0.9/1150)* 0.01 * 1000
= 0.0078 mg/kg wwt
= 0.03588 mg/kg dwt
PNEC soil:
K_(soil-water) = 0.2 m3/m3
RHO_(soil) = 1700 kg/m3
Conversion factor (wwt -> dwt): 1.13
PNEC_soil = (K_(soil-water)/ RHO_(soil))*PNEC_water * 1000
= (0.2/1700)* 0.1 * 1000
= 0.0117 mg/kg wwt
= 0.0132 mg/kg dwt
Conclusion on classification
Acute aquatic toxicity
Fish and daphnia were the most sensitive species in acute aquatic toxicity tests according to OECD guideline 203 and 202, respectively. The 96 -h EC50 value fpr fish and the 48 -h EC50 value for daphnia was greater than 100 mg/L. Based on acute aquatic toxicity results obtained, the test substance was not classified and labeled for acute aquatic toxicity according to Regulation (EC) No 1272/2008 (CLP), as amended for the seventh time in Regulation (EC) No 2015/1221.
Chronic toxicity
Lemna gibba was used in a growth inhibition test, according to OECD guideline 221. Based on the frond number, the 7-d EC50 was > 352 mg/L, the 7 -d EC10 was 52.4 mg/L and the NOEC was 56.3 mg/L. The test substance was not biodegradable. Based on the test results, the test substance was not classified and labeled for chronic toxicity according to Regulation (EC) No 1272/2008 (CLP), as amended for the seventh time in Regulation (EC) 2015/1221.
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