Registration Dossier
Registration Dossier
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EC number: 203-338-9 | CAS number: 105-85-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.3 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 13 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.13 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2.24 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 93.55 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 9.35 µg/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:
- 17.89 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
The PNEC derivation was as follows justified:
PNEC freshwater sediment:
K_(susp-water) = 17.99
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_freshwater sediment
= (K_(susp-water)/ RHO_(susp)) * PNEC_water * 1000
= (17.99/1150) * 1.3 * 1000
PNEC marine water sediment:
K_(susp-water) = 17.99
RHO_(susp) = 1150
Conversion factor (wwt -> dwt): 4.6
PNEC_marine water sediment
= (K_(susp-water)/ RHO_(susp)) * PNEC_marine water * 1000
= (17.99/1150) * 0.13 * 1000
PNEC soil:
K_(soil-water) = 20.7
RHO_(soil) = 1700
Conversion factor (wwt -> dwt): 1.13
PNEC_soil
= (K_(soil-water)/RHO_(soil)) * PNEC_freshwater * 1000
= (20.7/1700) * 1.3 * 1000
Conclusion on classification
Classification related key information
- Biodegradation: Readily biodegradable: 88 % after 28 days (OECD 310)
- Bioaccumulation: log Pow 3.9 (OECD 117)
Aquatic acute toxicity
- Aquatic invertebrates: EC50 (48 h) = 7.6 mg/L (arithmetic mean, Daphnia magna, OECD 202)
- Algae: ErC50 (72 h) = 3.1 mg/L (geometric mean, Pseudokirchneriella subcapitata, OECD 201)
- Fish: LC50 (96 h) = 1.3 mg/L (arithmetic mean, Danio rerio, OECD 203)
Aquatic chronic toxicity
- Algae: ErC10 (72 h) = 1.4 mg/L (geometric mean, Pseudokirchneriella subcapitata, OECD 201)
Classification according to CLP
Based on the data above, the substance has not 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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