Registration Dossier
Registration Dossier
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EC number: 259-470-2 | CAS number: 55067-15-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.111 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.11 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.011 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 1.11 mg/L
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:
- 10.79 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 1.08 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:
- 2.09 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) = 24.3
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_freshwater sediment
= (K_(susp-water)/ RHO_(susp))*PNEC_water * 1000
= (24.3/1150)* 0.111 *1000
= 2.35 mg/kg wwt
= 10.79 mg/kg dw
PNEC marine water sediment:
K_(susp-water) = 24.3
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_marine water sediment
= (K_(susp-water)/ RHO_(susp))*PNEC_marine water* 1000
= (24.3/1150)*0.011* 1000
= 0.235 mg/kg wwt
= 1.08 mg/kg dw
PNEC soil:
K_(soil-water) = 28.3
RHO_(soil) = 1700
Conversion factor (wwt -> dwt): 1.13
PNEC_soil
= (K_(soil-water)/ RHO_(soil))*PNEC_freshwater* 1000
= (28.3/1700)*0.111* 1000
= 1.848 mg/kg wwt
= 2.088 mg/kg dw
Conclusion on classification
Classification, Labelling, and Packaging Regulation (EC) No 1272/2008
The available experimental test data are reliable and suitable for classification purposes under Regulation (EC) No 1272/2008. The test substance was found to be not readily biodegradable under the test conditions. The most sensitive test for the aquatic compartment was the short-term toxicity test to fish. The test with the read across substance revealed a 96h-LC50 of > 111.2 mg/L. In addition a toxicity of the test substance to Lemna gibba was determined according to the principles of OECD 221 (2006). After 7 days, the ErC50 based on frond number and the ErC50 based on dry weight were determined to be greater than 1000 mg/L. Based on these results, the substance is neither classified as aquatic acute toxicity nor classified as aquatic chronic according to Regulation (EC) No 1272/2008 (CLP) as amended for the tenth time in Commission Regulation (EU) No 2017/776.
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