Registration Dossier
Registration Dossier
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EC number: 234-386-9 | CAS number: 11137-98-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.022 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):
- 0.022 mg/L
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (marine water)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Data from an acute toxicity study in Daphnia magna as well as from a growth inhibition test in freshwater algae are available. For acute fish toxicity, the short-term toxicity value is derived through read-across from a structurally similar substance.
Both the EC50 in daphnids as well as the LC50 in fish exceeded the solubility limit of the substance in test medium. The 72h-ErC50 and 72h-ErC10 for algae are 2.2 mg/L and 0.34 mg/L, respectively.
Short-term (acute) aquatic hazard:
Since the acute EC50 values are > 1 mg/L, the substance does not need to be classified according to the CLP Regulation.
Long-term (chronic) aquatic hazard:
The only available chronic value is the 72h-ErC10 for algae. As the substance is inorganic and, thus, not rapidly degradable, the chronic classification has to be determined based on the assessment of both criteria in Table 4.1.0, i.e. (b) (i) for one trophic level (algae – chronic data), and (b) (iii) for the other trophic levels (fish and daphnids acute data), and the most stringent outcome must be used for classification.
- Table 4.1.0, (b) (i): 72h-ErC10 (algae) is 0.34 mg/L, thus >0.1 and ≤1.0 mg/L leading to classification as Chronic Cat. 2.
- Table 4.1.0, (b) (iii): 96h-LC50 (fish) and 48h-EC50 (Daphnia magna) are > solubility limit of the test item in test medium, thus no classification needed.
The most stringent outcome is thus Chronic Category 2 (H411), based on the chronic algae value (72h-ErC10).
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