Registration Dossier
Registration Dossier
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EC number: 271-434-8 | CAS number: 68555-58-8
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): 4.2 mg/L (geometric mean measured concentration)
72 h, ErC50 (Pseudokirchneriella subcapitata): 0.791 mg/L (geometric mean measured concentration)
Aquatic chronic toxicity
72 h, ErC10 (Pseudokirchneriella subcapitata): 0.614 mg/L (geometric mean measured concentration)
Biodegradation: readily biodegradable: 86 % after 28 days (% degradation manometric respirometry test, OECD 301F
Partition coefficient: log Kow = 4.49 at 25 °C
Classification according to CLP
Acute aquatic data are available for two trophic levels for the test item. The most sensitive endpoint was determined to be aquatic algae, with a 72-hour EC50 of 0.791 mg/L. Therefore, the test item is classified as hazardous to the aquatic environment with a Acute Category 1 classification according to Regulation (EC) No 1272/2008 (CLP) as amended for the tenth time in Commission Regulation (EU) 2017/776.
Chronic aquatic data are available only for algae (72-h ErC10 = 0.614 mg/L).
As the EC10 value determined in the algae study is > 0.1 to < 1 mg/L and the substance is readily biodegradable, based on chronic data the test item is classified as hazardous to the aquatic environment with a Chronic Category 3 classification. However, the effect values determined in the short-term aquatic invertebrates study is > 1 to < 10 mg/L, and the substance has a log Kow of 4.49, therefore, by applying the most protective classification, the test item is classified based on the short-term aquatic invertebrates study as hazardous to the aquatic environment with a Chronic Category 2 classification according to Regulation (EC) No 1272/2008 (CLP) as amended for the tenth time in Commission Regulation (EU) 2017/776.
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