Registration Dossier
Registration Dossier
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EC number: 204-667-0 | CAS number: 123-96-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 18.57 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 185.7 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.857 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.127 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:
- 0.014 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
For classification purposes ecotoxicity, biodegradability and bioconcentration have to be considered.
Ecotoxicity:
Aquatic acute toxicity data of the registered substance are available for the three trophic levels and are summarised here below :
- 96h-LC50 for fish = 18.57 mg/L (time-weighed mean measured concentrations
- 48h-EC50 for invertebrates = 30 mg/L (nominal concentrations as measured concentrations in the range of 80 -120%)
- 72h-ErC50 for algae = 48 mg/L (geometric mean measured concentrations)
- 72h-NOErC for algae = 8.7 mg/L (geometric mean measured concentrations)
Biodegradability:
The substance is rapidly biodegradable in the environment as demonstrated with an OECD TG 301 C (Modified MITI Test (I). The biodegradation percentage was 96% after 14 days.
Bioconcentration:
Based on the LogKow = 2.86, the substance has a low potential for bioaccumulation.
Conclusion classification according to CLP regulation 1272/2008:
Based on the results of the acute toxicity data (lowest LC50 = 18.57 mg/L), the substance does not need acute classification.
Based on the results of the acute toxicity data (lowest LC50 = 18.57 mg/L) and the chronic data for algae (NOEC = 8.7 mg/L), the substance does not need chronic classification.
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