Registration Dossier
Registration Dossier
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EC number: 280-445-7 | CAS number: 83411-71-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 9.9 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 99 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.99 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 99 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 32 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.128 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.013 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:
- 0.02 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 4.44 mg/kg food
- Assessment factor:
- 300
Additional information
Conclusion on classification
The following results are obtained for the evaluation of the aquatic toxicity of the substance for fish, algae and aquatic invertebrates.
LC50 (Salmo Gairdneri,96h) > 22 mg/l (nominal)
EC50 (Daphnia magna, 48h) > 9.9 mg/l (mean measured)
NOEC (Pseudorkirchneriella subcapitata,72h) = 50 % saturated solution based on Growth Rate
EC50 (Pseudorkirchneriella subcapitata,72h)> 100 % of saturated solution or maximum water solubility based on Growth Rate
The lowest acute aquatic toxicity EC50 is set at 9.9 mg/l for classification purposes.
No adequate chronic aquatic toxicity data for all three trophic levels. For the algae (Pseudokirchneriella subcapitata), the 72h-ErC10 on growth rate was greater than the 100% saturated solution based on nominal concentrations.
Therefore, the chronic classification is assessed using both the acute toxicity data and the chronic toxicity data and the most stringent outcome is selected.
The substance is not readily biodegradable based on biotic and abiotic experimental data. The substance has a low potential for bioaccumulation based on the LogKow which is lower than 3.
The substance is classified as Aquatic chronic 2/ H411 according to the CLP Regulation (EC) No.1272/2008.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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