Registration Dossier
Registration Dossier
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EC number: 266-831-8 | CAS number: 67634-26-8
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Short-term toxicity results for Daphnia and algae are available for the substance. The EC50 value for Daphnia is 16.6 mg/L. The ErC50 for algae is 10.5 mg/L.
Since all acute EC50 values are > 1 mg/L, the substance does not need to be classified for acute aquatic toxicity according to Regulation 1272/2008/EC (CLP: Table 4.1.0; a) and its amendments.
The only available chronic value is the EC10 of algae being 4.7 mg/L. According to CLP Figure 4.1.1. The chronic classification has to be determined based on this chronic value and based on the substance being not readily biodegradable, according to Table 4.1.0, (b) (i). Also the EC50 value for Daphnia needs to be considered according to Table 4.1.0, (b) (iii). The most stringent outcome of these two should be leading:
- The substance is not readily biodegradable. Based on the EC10 > 1 mg/L, the substance does not need to be classified for chronic toxicity according to Table 4.1.0, (b) (i).
- As the EC50 value for Daphnia is >10 - <=100 mg/L, the substance is not readily biodegradable and the log Kow is above 4, the substance needs to be classified for chronic aquatic toxicity in Category 3 according to Table 4.1.0, (b) (iii). This is the most stringent outcome.
Overall, it can be concluded that the substance needs to be classified for aquatic environmental hazards as Chronic Cat. 3 (H412: Harmful to aquatic life with long lasting effects) according to Regulation 1272/2008/EC (CLP) and its amendments.
For GHS: As the acute EC50 values are >10 but ≤ 100 mg/L, the substance needs to be classified as Acute Cat. 3 (H402: Harmful to aquatic life) and Chronic Cat. 3 (H412: Harmful to aquatic life with long lasting effects) according to GHS.
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