Registration Dossier
Registration Dossier
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EC number: 258-751-7 | CAS number: 53767-93-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1.3 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.13 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 1 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.326 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.033 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:
- 0.064 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
Conclusion on classification
Short-term toxicity results for fish, Daphnia and algae are available for the substance. The 96 -h LC50 value for fish is 6.1 mg/L, the 48-h EC50 value for Daphnia is 1.3 mg/L, the 72-h ErC50 value for algae is 5.4 mg/L. Since the acute toxicity values are >1 mg/L, the substance does not need to be classified for acute toxicity according to EU CLP (EC No. 1272/2008 and its updates; Table 4.1.0; a).
Chronic toxicity data are available only for algae. The 72-h ErC10 value is 2.9 mg/L. According to CLP Figure 4.1.1, the chronic classification has to be determined based on the chronic value for algae according to Table 4.1.0, (b) ii, as well as based on the lowest acute value available for fish and Daphnia according to Table 4.1.0, (b) iii, and the most stringent outcome should be leading:
- The substance is readily biodegradable and has a chronic toxicity value of >1 mg/L. Based on this information, the substance does not need to be classified for chronic toxicity according to Table 4.1.0, (b) ii.
- The substance is readily biodegradable and has an experimental BCF of <500 L/kg. Based on this information, the substance does not need to be classified for chronic toxicity according to Table 4.1.0, (b) iii.
Overall, it can be concluded that the substance does not need to be classified according to EU CLP (EC No. 1272/2008 and its updates)
GHS: As the lowest acute toxicity value is >1 but ≤ 10 mg/L, the substance additionally needs to be classified as Acute Cat. 2 (H401)
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