Registration Dossier
Registration Dossier
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EC number: 430-550-0 | CAS number: 1671-49-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.21 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.59 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.021 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 44.8 mg/L
- Assessment factor:
- 5
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 4.96 mg/kg sediment dw
- Assessment factor:
- 1
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.496 mg/kg sediment dw
- Assessment factor:
- 1
- 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:
- 0.02 mg/kg soil dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Acute toxicity data for two trophic levels (algae and fish) fall in the range 10 mg/L < LC50 <= 100 mg/L, in addition the substance is not readily biodegradable, which meets the initial criteria for applying the category "Hazardous to the Aquatic Environment, Chronic Category 3". However, these criteria do not apply where chronic data are available demonstrating a NOEC >1 mg/L. Data for fish, daphnia and algae are available, with NOEC=19 mg/L, NOEC=16 mg/L and NOEC=2.1 mg/L, respectively, which clearly show that the classification into Chronic Category 3 does not apply. The substance does not meet the criteria for classification and labelling for Environmental Hazards as set out in Regulation (EC) No. 1272/2008, Annex I, Part 4.
It should be noted that according to the Globally Harmonised System of Classification and Labelling of Chemicals, 3rdEdition (UN GHS, “Purple Book”), Part 4, Table 4.1.1, the substance meets the classification criteria for Acute Aquatic Hazard, Category 3.
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