Registration Dossier
Registration Dossier
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EC number: 246-669-4 | CAS number: 25152-85-6
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 aquatic toxicity data are available for two trophic levels (aquatic invertebrates and aquatic algae). The acute effect value, EC50 for Daphnia is 1.5 mg/L and the ErC50 for Algae is 1.3 mg/L. Based on the lowest available acute data, for Algae with an EC50 value of >1 mg/L, the substance does not need to be classified for acute aquatic hazard (CLP, 2011: Table 4.1.0 (a)).
As for only one trophic level chronic toxicity data are available, both chronic toxicity data (in combination with biodegradability) and acute toxicity data (in combination with biodegradability and/or Log Kow) need to be assessed and the most stringent outcome needs to be applied (CLP, 2011: Figure 4.1.1.). In view of the substance being readily biodegradable and the chronic available value is the ErC10 of Algae being 0.38 mg/L, the substance needs to be classified for chronic toxicity according to Table 4.1.0(b)ii, resulting in Category Chronic 3. Based on the acute toxicity data of the other trophic level, being Acute Daphnia EC50 of 1.5 mg/L, and the substance having a Log Kow of 4.5, despite being readily biodegradable, the substance needs to be classified as Category Chronic 2 according to Table 4.1.0(b)iii. Therefore, for long-term aquatic hazard, based on the most stringent outcome of the acute/chronic toxicity data, the substance needs to be classified as Chronic 2, H411: Toxic to aquatic life with long lasting effects, according to Regulation 1272/2008/EC (CLP, 2011).
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