Registration Dossier
Registration Dossier
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EC number: 242-901-3 | CAS number: 19234-20-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.042 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.42 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.004 mg/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:
- 0.193 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.019 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:
- 0.256 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
Conclusion on classification
Degradation
Biodegradation: Not readily biodegradable: 41% (O2 consumption) after 28 d (OECD 301C)
Bioaccumulation
Log Kow: 1.28 (OECD 117)
Aquatic toxicity
96 h, LC50 (Oncorhynchus mykiss): 42 mg/L (nominal)
48 h, EC50 (Daphnia magna): > 100 mg/L (nominal)
72 h, ErC50 (Pseudokirchnerialla subcapitata): > 100 mg/L (nominal)
72 h, NOEC (Pseudokirchnerialla subcapitata):≥100 mg/L (nominal)
Classification according to CLP
Based on the data above, the acute aquatic toxicity L(E)C50 is > 1 mg/L. 2-(1-methylethoxy)ethyl acetate does not need to be classified and labeled as acute aquatic hazard according to the 2nd ATP of the Regulation (EC) No. 1272/2008 (CLP).
Valid chronic aquatic toxicity data are not available. Nevertheless, 2-(1-methylethoxy)ethyl acetate is considered to have a low potential for bioaccumulation but not to be rapidly degradable. Based on the LC50 (96 h) of 42 mg/L for Oncorhynchus mykiss, 2-(1-methylethoxy)ethyl acetate needs to be classified and labeled as environmental hazard Chronic Cat. 3 according to the 2nd ATP of the Regulation (EC) No. 1272/2008 (CLP).
Classification according to DSD
Based on the data above, 2-(1-methylethoxy)ethyl acetate is considered to be not rapidly degradable and has low potential for bioaccumulation. The acute aquatic toxicity LC50 (96 h) is 42 mg/L for Oncorhynchus mykiss. Thus, 2-(1-methylethoxy)ethyl acetate needs to be classified and labeled as environmental hazard R52/53 according to Directive 67/548/EEC.
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