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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Based on screening criteria, the 16 EPA-PAH taken as reference substances are not readily biodegradable. But some of them are considered to be inherently biodegradable (2- and 3-ring aromatic compounds) while 4- and more ring PAH are considered not to be biodegradable. The composition of distillates (coal tar), heavy oils (anthracene oil >50 ppm BaP, AOH [CAS no. 90640-86-1]) - mostly 3- and 4-ring PAH - indicates that the substance as a whole is not readily or inherently biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information