Registration Dossier
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EC number: 242-016-2 | CAS number: 18127-01-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.05 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 10.5 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.105 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 1.05 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 3.16 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.104 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 10.4 µg/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:
- 20.2 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 0.17 mg/kg food
Additional information
Conclusion on classification
Environmental classification and labelling of a substance is generally based on data from short-term aquatic toxicity results, the ready biodegradability of the substance and an experimentally determined BCF (or if absent the measured octanol/water partition coefficient). Available adequate chronic toxicity data is also relevant for the assessment of long-term aquatic hazards (Regulation 286/2011/EC).
Short-term aquatic toxicity data is available for three trophic levels (daphnia, algae and fish). The lowest short-term L(E)C50 is for fish with a 96 hr LC50 of 1.05 mg/L. Since the LC50 is > 1mg/L the substance is not classified for short-term (acute) hazards to the aquatic environment according to the CLP Regulation 1272/2008/EC.
Long- term (chronic) aquatic toxicity data is only available for one trophic level (algae). Therefore, the long-term hazard has been assessed based on both:
a) The chronic aquatic toxicity data for algae (NOEC = 0.7 mg/l, read-across substance), which for a readily biodegradable substance results in a Chronic 3 classification, and
b) The acute aquatic toxicity data for daphnia (EC50 = 1.8 mg/L) and fish (LC50 = 1.05 mg/L, QSAR) and environmental fate data (readily biodegradable and log Kow of 3.2), which results in no Chronic 2 classification,
and classifying according to the most stringent outcome.
Thus it is concluded that the substance is classified Aquatic Chronic 3 (H412) according to the CLP Regulation 1272/2008/EC & adaptation 286/2011/EC.
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