How to take account of the "Dangerous for the aquatic environment" criterion?
How do you classify dangerous goods?

The criterion of danger to the aquatic environment, indicated by a specific pictogram (see Figure "Pictogram – Dangerous for the aquatic environment"), must be studied additionally for each of the UN numbers chosen, as it is not linked to the intrinsic physico-chemical hazards of the substance taken into account for its transport classification.

The acute or chronic toxicity values of the material for aquatic species should therefore be studied, according to the criteria defined in § 2.2.9.1.10 of the ADR, and given by the test results or the material's MSDS. Any substance already labelled "Dangerous for the aquatic environment" under CLP must also be considered "Dangerous for the aquatic environment" under ADR. If the substance meets the criteria for being hazardous to the aquatic environment, this should be indicated in column (5b) of the Transported Goods Summary Table (Tool ...