Registration Dossier
Registration Dossier
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EC number: 207-491-2 | CAS number: 475-20-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
The EC50 value to Daphnia magna was 0.119 mg/L based on geometric mean measured concentrations. The acute algae ErC50 is predicted to be 0.28 mg/L.
Since the EC50 values are ≤ 1 mg/L, the substance needs to be classified as Acute Cat. 1 (H400) according to Regulation 1272/2008/EC (CLP; Table 4.1.0; a).
The only available chronic value is the predicted chronic value (growth rate) of algae being 0.15 mg/L. According to CLP Figure 4.1.1, the chronic classification has to be determined based on this chronic value according to Table 4.1.0, (b) ii (as the substance is readily biodegradable) and based on the available EC50 value for Daphnia and environmental fate data according to Table 4.1.0, (b) iii.
The most stringent outcome should be leading:
- As the chronic value is > 0.1 but ≤ 1 mg/L in combination with the substance being readily degradable it needs to be classified as Chronic Cat. 3 based on this available chronic value.
- As the substance has a log Kow ≥ 4, the substance needs to be classified as Chronic Cat. 1 based on the available EC50 value for Daphnia magna (as it is ≤ 1 mg/L). This is the most stringent outcome.
Overall, it can be concluded that the substance needs to be classified for environmental hazards as Acute Cat. 1 (H400) and Chronic Cat. 1 (H410) according to Regulation 1272/2008/EC (CLP).
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