Registration Dossier
Registration Dossier
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EC number: 500-465-4 | CAS number: 160901-28-0 1 - 2.5 moles ethoxylated
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.106 mg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.071 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.011 mg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 5.48 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.384 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.038 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:
- 7.5 mg/kg soil dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The assessment is based on the data currently available. New studies, based on the category review and the final decisions issued for some of the category substances, which are also relevant for this assessment, are currently being conducted. The hazard assessment with respect to aquatic toxicity will be updated once all ongoing studies have been finalised.
Classification related key information
Biodegradation in water: readily biodegradable (104% after 28 d, ISO 14593)
Bioaccumulation: low potential for bioaccumulation
Water solubility: > 400 g/L at 20 ºC (OECD 105)
Acute toxicity:
- For fish: 96 h LC50 (Danio rerio) = 7.1 mg a.i./L (nominal, OECD 203)
- For invertebrates: 48 h EC50 (Daphnia magna, immobilization) = 91 mg a.i./L (nominal, OECD 202)
- For algae: 72 h ErC50 (Pseudokierchnerialla subspicata, growth rate) > 100 mg a.i./L (nominal, OECD 201)
Chronic toxicity:
- For invertebrates: 21 d NOEC (Daphnia magna, reproduction): = 5.3 mg a.i./L (measured, OECD 211)
- For algae: 72h NOErC (Pseudokierchneriella subspicata, growth rate) = 31.3 mg a.i./L (nominal, OECD 201)
Classification justification according to CLP:
Based on the data above, AES (C9 -11, 1-2.5EO) Na is considered to be rapidly degradable and has a low potential for bioaccumulation. The acute aquatic toxicity L(E)C50 are above 1 mg/L for fish, invertebrates and algae. Valid chronic toxicity data are available to aquatic invertebrates and algae – the lowest NOEC is 5.3. mg/L (thus not in the range of > 0.1 to < 1 mg/L) for aquatic invertebrates. AES (C9 -11, 1-2.5EO) Na (CAS 160901-28-0) does not need to be classified and labeled as environmental hazard according to the Regulation (EC) No.1272/2008 (CLP) and the Regulation (EU) No. 286/2011 (2nd ATP).
M-factor for acute aquatic toxicity: --
M-factor for chronic aquatic toxicity: --
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