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Ecotoxicological information

Toxicity to aquatic plants other than algae

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Description of key information

With high probability acutely not harmful to aquatic plants.

Key value for chemical safety assessment

Additional information

The toxicity of Orasol Black X51 to aquatic plants was investigated in a 7d growth test performed with duckweed (Lemna gibba) according to OECD TG 221 (BASF SE, 2017; Rep. no.: 63E0074/16E025). The ErL50 was determined to be >320 mg/L (nominal). It can be concluded, that the substance is with high probability acutely not harmful to aquatic plants.

Orasol Black X51 is strongly coloured. According to REACH guidance chapter R.7b (ECHA, 2017) the 7-d Lemna growth test avoids the problem since the fronds grow at the water surface.

Due to the 'difficult substance testing issues', the chemical safety assessment of Orasol Black X51 (e.g. classification, derivation of PNECs) is, therefore, based on the available data on aquatic plants other than algae (Lemna gibba, BASF SE, 2017; Rep. no.: 63E0074/16E025 in accordance with REACH guidance chapter R.7b (ECHA, 2017).