Registration Dossier

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Conclusion on classification

For algae and Daphnia toxicity values an ECOSAR calculation was performed for Octacetal.

The EC50 value for daphnia is 8.07 mg/L, whereas the EC50 and EC10 for algae are 9.39 and 3.13 mg/L respectively.

Based on the lowest available acute data for daphnia with an EC50 value of 8.07 mg/L the substance does not need to be classified for acute aquatic toxicity according to Table 4.1.0 (a) of CLP.

As one chronic value is available for algae, the chronic C&L needs to be derived on both chronic and acute toxicity data and the most stringent outcome needs to be taken into consideration. The chronic value available is the EC10 for algae being 3.13 mg/L. In combination with the substance not being rapidly degradable this would not lead to classification according to Table 4.1.0 (b) (i) of CLP.

In view of the acute Daphnia result of 8.07 mg/L, the substance not being rapidly biodegradable and the log Kow of 3.17 the substance needs to be classified for long term aquatic toxicity according to Figure 4.1.1 and Table 4.1.0, (b) iii of CLP, resulting in Aquatic Chronic Category 2 (H411) classification.


Overall, it can be concluded that Octacetal does not need to be classified for acute aquatic toxicity, but does need to be classified as Aquatic Chronic 2 (H411 / Toxic to aquatic life with long lasting effects) in accordance with the criteria outlined in Annex I of the CLP Regulation (1272/2008/EC) and its amendments.