Registration Dossier
Registration Dossier
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EC number: 700-615-0 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.012 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2.2 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 12.73 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 1.273 mg/kg sediment dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 6.1 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Additional information
An algal acute toxicity test has been performed. Under the experimental conditions:
72h - ErC50 = 0.098 mg/L (0.094-0.10 mg/L)
72h - NOEC = 0.024 mg/L
However, results were not considered valid as the light intensity of the test was equal to 55 µE/m²/s1, which is above the recommanded range of 60-120 µE/m²/s1by the guideline. As coloured substances can absorb photosynthetically active light and hence limit growth of algal cultures, the test should have been performed at the maximum recommended light intensity, i.e. 120 µE/m²/s1, in order to reduce the growth inhibition phenomenon.
Therefore, these low experimental values are most probably due to a growth inhibition because of the inadequate light intensity instead of such inherent toxicity. Or, the potential inherent toxicity of the test item must have been aggravated by the phenomena of growth inhibition. But it is difficult to distinguish the contribution of both effects, i.e. growth inhibition and inherent toxicity.
So, experimental data from the algal acute toxicity test has been held to be invalid and therefore data from the daphnia acute toxicity test has been used to perform the CSR.
Conclusion on classification
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