Registration Dossier
Registration Dossier
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EC number: 700-255-4 | CAS number: 31775-89-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.002 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:
- 23 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.54 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.054 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:
- 0.108 mg/kg soil dw
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Classification related key information
Biodegradation in water: screening test: 70% (ThCO2) in 28 days (OECD 301B)
Log Kow: 3.99 (OECD 117)
Acute toxicity:
- to Fish: LC50 (96h) = 0.16 mg/L for Oryzias latipes (OECD 203)
- to Algae: ECr50 (72 h) > 0.4 mg/L for Pseudokirchneriella subcapitata (OECD 201)
- to Crustacea: EC50 (48 h) = 9 mg/L for Daphnia magna (OECD 202)
Chronic toxicity:
- to Fish: not available
- to Algae: NOEC (72h) = 0.021 mg/L for Pseudokirchneriella subcapitata (OECD 201)
- to Crustacea: not available
Classification justification according to CLP
Based on the data above, the substance is considered rapidly biodegradable. The acute aquatic toxicity LC50 is < 1 mg/L for Oryzias latipes. No long-term data are available for fish and Daphnia, the NOEC is < 0.1 mg/L for Pseudokirchneriella subcapitata. The substance needs to be classified and labelled as environmental hazard Acute Cat. 1 and Chronic Cat. 2 according to the Regulation (EC) No. 1272/2008 (CLP) and the Regulation (EU) No. 286/2011 (2ndATP).
M-factor for acute aquatic toxicity: 1
M-factor for chronic aquatic toxicity: not assignable
Classification justification according to DSD
Based on the data above, PEMB is considered to be rapidly degradable. The acute aquatic toxicity LC50 is < 1 mg/L for fish. Therefore PEMB has been classified and labelled as environmental hazard R50/R53 according to the Directive 67/548/EEC.
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