Registration Dossier
Registration Dossier
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EC number: 480-370-1 | CAS number: 21743-27-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.017 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.17 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.061 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.006 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:
- 0.002 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
N-(Morpholinomethyl)triethoxysilane was neither harmful to fish nor to aquatic invertebrates. The only aquatic species that was adversly affected was the freshwater green algal species Desmodesmus subspicatus (ECr50 = 25.0 mg/L). In the CSR a risk assessment is provided for terrestrial organisms based on the Equilibrium Partitioning Method. As the risk characterisation ratios are low for all applications of the substance no further testing is considered to be necessary.
Conclusion on classification
Based on the 72-hours ECr50 of 25.0 mg/L in the freshwater green algal species Desmodesmus subspicatus and the low biodegradability N-(Morpholinomethyl)triethoxysilane is classified as harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
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