Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Conclusion on classification

One short-term toxicity test for daphnia and one aquatic toxicity study for algae is available for Muguesia, based on read across to Pamplefleur. The EC50 value for daphnia is 8.7 mg/l, whereas the ErC50 and ErC10 for algae are 20 and 11 mg/L, respectively. Based on the lowest available acute data for daphnids with an EC50 value of 8.7 mg/L, the substance does not need to be classified for acute aquatic toxicity.

As only one chronic value is available (algae), the aquatic chronic classification needs to be derived on both chronic and acute toxicity data and the most stringent outcome needs to be taken into consideration. The lowest chronic value available is the ErC10 for algae being 11 mg/L. In combination with the substance being readily degradable this would not lead to classification. In view of the acute daphnid result of 8.7 mg/L, the substance being readily biodegradable and the log Kow of 3.1, the substance does not need to be classified for chronic toxicity according to Figure 4.1.1 and Table 4.1.0 of CLP.

Overall, it can be concluded that Muguesia does not need to be classified for the environment in accordance with the criteria outlined in Annex I of the CLP Regulation (1272/2008/EC).