Registration Dossier
Registration Dossier
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EC number: 234-054-3 | CAS number: 10519-11-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Aquatic acute toxicity
48 h, EC50 (Daphnia magna): 7.5 mg/L (geometric mean measured concentration)
72 h, ErC50 (Pseudokirchneriella subcapita): 6.51 mg/L (growth rate, geometric mean measured concentration)
Aquatic chronic toxicity
72 h, ErC10 (Pseudokirchneriella subcapita): 2.63 mg/L (growth rate, geometric mean measured concentration)
Biodegradation: Not readily biodegradable, 9 % (based on dissolved oxygen reduction) after 28 days
Partition coefficient: log Kow = 4.45
Classification, Labelling, and Packaging Regulation (EC) No 1272/2008
The available experimental test data are reliable and suitable for classification purposes under Regulation (EC) No 1272/2008. The test substance was found to be not readily biodegradable (2000). The test item has a lowest EC50 of > 1 to ≤ 10 mg/L for algae, therefore the substance is not classified for aquatic acute toxicity based on Table 4.1.0 (a) of the CLP Guidance (2017). The only chronic data available is an EC10 that is > 1 but ≤ 10 mg/L for algae (2017). Based on the chronic data, the substance is not classified for aquatic chronic toxicity according to Table 4.1.0 (b)(i) of the CLP Guidance (2017). However, according to Figure 4.1.1 of the CLP Guidance (2017), when chronic data are only available for one trophic level the chronic classification should be assessed based on both chronic and acute data, and the most stringent classification applied. Based on acute data, the substance is classified as aquatic chronic category 2 according to Table 4.1.0 (b)(iii) of the CLP Guidance (2017). Therefore the substance is classified as aquatic chronic 2 as the worst-case scenario, with the hazard phrase H411: Toxic to aquatic life with long lasting effects, according to Regulation (EC) No 1272/2008 (CLP).
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