Registration Dossier
Registration Dossier
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EC number: 931-275-3 | CAS number: 1125503-33-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 4 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.4 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.4 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 190 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 4.8 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.48 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:
- 0.61 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 16.7 mg/kg food
- Assessment factor:
- 90
Additional information
Based on the available data for the aquatic compartment HYEQS is most toxic to algae with an acute ErC50 (72h) of 0.14 mg/L and a chronic ErC10 (72h) of 0.04 mg/L.
Based on the available data for the terrestrial compartment HYEQS is most toxic to plants (Avena sativa (oat) & Lactuca sativa (lettuce)) with a lowest chronic EC10 (14d) growth of 6.1 mg/kg soil dw for Avena sativa.
Conclusion on classification
For the Environmental classification the following data of HYEQS have to be considered:
1. Acute ecotoxicity (lowest available value): Algae ErC50 (72h) = 0.14 mg/L
2. Chronic ecotoxicity (lowest available value): Algae ErC10 (72h) = 0.04 mg/L
3. Ready biodegradability
4. Log Kow = 2.3 (not bioaccumulative)
Based on these parameter the proposed classification is a follows
Proposed classification according DSD 67/548/EEC:
N, R50 Algae
ErC50 (72h) < 1 mg/L
readily
biodegradable, Log Kow < 3 (no long-term classification)
Proposed classification according CLP 2ndATP 2011/286/EEC
Acute (short-term) aquatic hazard: Acute
Category 1
readily biodegradable, ErC50 (72h) is < 1 mg/L), M=1
Long-term (chronic) aquatic hazard: Chronic
Category 2
readily biodegradable, ErC10 (72h) is >0.01 but <= 0.1 mg/L, M = -
The M factors given before are based on the rules given in Section 4.1.3.5.5.5, in 2ndATP of CLP Regulation 2011/286/EEC for assigning of M factors.
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