Registration Dossier
Registration Dossier
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EC number: 440-020-0 | CAS number: 61668-40-4
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 tests for algae and Daphnia are available for the substance. The EC50 value for Daphnia is 0.089 mg/l, whereas the ErC50 for algae is 0.077 mg/L. Based on the lowest available acute data for algae with an EC50 value of 0.077 mg/L the substance needs to be classified as Acute 1 (CLP, 2011: Table 4.1.0; a) and H400. As one reliable long-term toxicity endpoint is available chronic classification needs to be derived on both acute and chronic data and worst case should be taken.The only available chronic value is the NOErC of algae being 0.025 mg/L and the substance is not readily biodegradable. In view of the long-term results for algae the substance needs to be classified for chronic toxicity according to Figure 4.1.1and Table 4.1.0, (b) i, resulting in Chronic 1 (H410). For chronic classification, based on acute data, data from the other trophic levels need to be taken into account. The EC50 for Daphnia of 0.089 mg/L in combination with the substance being not readily degradable and having a log Kow of >4 would also lead to Chronic 1 (H410)according to Figure 4.1.1and Table 4.1.0, (b) iii.Overall, it can be concluded that the substance needs to be classified as H400/H410 and M-factor 10 and 1 for acute toxicity and chronic toxicity, respectively according to Regulation 1272/2008/EC (CLP, 2011) and R50/53 according to Directive 67/548/EEC (DSD).
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