Registration Dossier
Registration Dossier
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EC number: 903-945-5 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.006 mg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.077 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 6.6 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.042 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.004 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:
- 0.005 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The environmental fate and pathways and the ecotoxicity profile of the reaction mass of chlorodifluoroacetic acid (CDFA) and trifluoroacetic acid (TFA) is defined by the properties of its both constituents, i.e. CDFA and TFA.
Conclusion on classification
Based on data on the reaction mass and on its constituents, short-term E/LC50 values are available for algae (growth rate 72hEC50 = 7.7 mg/L), daphnia (48hEC50 > 100 mg/L) and fish (96hLC50 between 60 and 100 mg/L). The lowest EC50 is obtained in the algal toxicity test showing that the reaction mass is toxic to aquatic organisms.
Additionally, the constituents of the reaction mass are not readily biodegradable and have a low potential of bioaccumulation. Chronic toxicity data are available for daphnia and algae showing a 21d NOEC of 10 mg/L and a 72hNOEC of 0.32 mg/L respectively. Based on this information, the reaction mass is toxic to aquatic life with long lasting effects.
In accordance with Regulation (EC) No 1272/2008, Table 4.1.0 (b) (i), the Reaction mass of chlorodifluoroacetic acid and trifluoroacetic acid is to be classified as hazardous to the aquatic environment category chronic 2; H411 (Toxic to aquatic life with long lasting effects) since the chronic NOEC value for algae is below the classification criterion of 1.0 mg/L.
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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