Registration Dossier
Registration Dossier
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EC number: 422-210-5 | CAS number: 68957-94-8 T3P
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
- PNEC marine water (intermittent releases):
- 1 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:
- 0.464 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.046 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:
- 0.034 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) = 1.16
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_freshwater sediment
= (K_(susp-water)/ RHO_(susp))*PNEC_water * 1000
= (1.16/1150)*0.1*1000
= 0.1 mg/kg wwt
= 0.464 mg/kg dw
PNEC marine water sediment:
K_(susp-water) = 1.16
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_marine water sediment
= (K_(susp-water)/ RHO_(susp))*PNEC_marine water* 1000
= (1.16/1150)* 0.01 * 1000
= 0.01 mg/kg wwt
= 0.0464 mg/kg dw
PNEC soil:
K_(soil-water) = 0.514
RHO_(soil) = 1700
Conversion factor (wwt -> dwt): 1.13
PNEC_marine water sediment
= (K_(soil-water)/ RHO_(soil))*PNEC_marine water* 1000
= (0.514/1700)* 0.01 * 1000
= 0.0302 mg/kg wwt
= 0.034 mg/kg dw
Conclusion on classification
Aquatic acute toxicity
96 h, LC50 (Danio rerio): > 100 mg/L (nominal concentration)
48 h, EC50 (Daphnia magna): > 100 mg/L (nominal concentration)
72 h, ErC50 (Desmodesmus subspicatus): > 100 mg/L (nominal concentration)
Aquatic chronic toxicity
72 h, NOEC (Desmodesmus subspicatus): 100 mg/L (nominal concentration)
Biodegradation:
The test item was not readily biodegradable unter the test conditions chosen (% degradation less than 10 %) in a test according to OECD 301 A.
Partition coefficient: log Kow = 0 (calculation in IUCLID section 4.7)
Water solubility: 9600 mg/L (calculation in IUCLID section 4.8)
Classification according to CLP
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. All test for the aquatic compartment revealed an EC50 of more than 100 mg/L. For the calculation of the PNEC an EC50 of 100 mg/L was used. 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) 2017/776.
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