Registration Dossier
Registration Dossier
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EC number: 269-124-2 | CAS number: 68187-77-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.004 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.043 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.004 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
According to the CLP Regulation (EC 1272/2008), acute aquatic toxicity is normally determined using a fish 96-hour LC50, a crustacean species 48-hour EC50 and/or an algal species 72- or 96-hour EC50; nevertheless it is also specified in the Regulation that data on other species (e. g. Lemna spp.) shall also be considered if the test methodology is suitable. These species cover a range of trophic levels and are considered as surrogate for all aquatic organisms.
According to the table 4.1.0 of the CLP Regulation (EC n. 1272/2008), asubstance for wich adequate chronic toxicity data are not available shall be classified as
Aquatic Acute 1 when:
96 hr LC50 (for fish)≤1 mg/l and/or
48 hr EC50 (for crustacea)≤1mg/l and/or
72 or 96 hr ErC (for algae or other aquatic plants)≤1 mg/l
Aquatic Chronic 1 when:
96 hr LC50 (for fish)≤1 mg/l and/or
48 hr EC50 (for crustacea)≤1mg/l and/or
72 or 96 hr ErC (for algae or other aquatic plants)≤1 mg/l
Aquatic Chronic 2 when:
96 hr LC50 (for fish) > 1 <= 10 mg/l and/or
48 hr EC50 (for crustacea)> 1 <= 10 mg/l and/or
72 or 96 hr ErC (for algae or other aquatic plants)> 1 <= 10 mg/l
Aquatic Chronic 3 when:
96 hr LC50 (for fish) > 10 <= 100 mg/l and/or
48 hr EC50 (for crustacea)> 10 <= 100 mg/l and/or
72 or 96 hr ErC (for algae or other aquatic plants)> 10 <= 100 mg/l
and the substance is not rapidly degradable and/or the experimentally determined BCF ≥ 500 (or, if absent, the log K ow ≥ 4).
The results used in read across from analogue substance 1 show that the most sensitive species is the Daphnia with a EC50 equal to 4.3 mg/l. However, the substance is rapidly biodegradale as reported in the relevant section and therefore it is not classified for aquatic compartment neither for acute nor for the chronic exposure.
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