Registration Dossier
Registration Dossier
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EC number: 237-600-9 | CAS number: 13863-31-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.062 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.006 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 1 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 62.75 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 6.27 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:
- 5 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
The following data are available for the evaluation of the aquatic toxicity
Short-term toxicity
Fish: LC50 (96 h) > 100 mg/l
Aquatic invertebrates:EC50 (48h) > 100 mg/l
Algae: ErC50 (72h) > 123 mg/l (nominal); NOEC (72h, growth rate) = 30.8 mg/l (nominal)
Long-term toxicity
Fish: NOEC (fry length) < 0.625 mg/l (nominal)
Aquatc invertebrates: NOEC (21d, overall threshold effects and reproduction) = 3.22 mg/l (twa)
The substance is determined to be not rapidly degradable and not bioaccumulative considering its LogPow. No acute aquatic toxicity was observed. Valid chronic toxicity data are available for Daphnia and fish.
The effect level determined for aquatic invertebrates does not permit the classification for the aquatic chronic toxicity.
However, the substance caused significant effects on Zebrafish in an early life stage test, 30 days post hatch. For the parameter hatch, the NOEC was 10.0 mg/l. For the parameters post hatch survival and overall survival, the NOECs were 1.25 and 2.50 mg/l, respectively. For the parameter fry growth (expressed as length and fresh weight) the NOECs were < 0.625 mg/l (length) and 0.625 mg/l (weight). The effect level(NOEC)determined during the long-term toxicity to fish is < 1 mg/l.
Further points are yet to be addressed in the long-term toxicity used for the classification of the aquatic toxicity. For this reason, the classification is given as INCONCLUSIVE until further investigations will be concluded.
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