Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

This endpoint has been waived as it is scientifically unjustified for ammonia. No bioaccumulation is expected for AlN and its hydrolysis products aluminium ions and ammonia.

In general, metals do not biomagnify unless they are present as, or having the potential to be present, in an organic form (e.g. methylmercury). Organometals tend to be lipid-soluble, are not metabolised, and are efficiently assimilated upon dietary exposure. The available evidence shows the absence of aluminium biomagnification across trophic levels both in the aquatic and terrestrial food chains. The existing information suggests not only that aluminium does not biomagnify, but rather that it tends to exhibit biodilution at higher trophic levels in the food chain.

Ammonia is part of the global nitrogen cycle and is not expected to biomagnify in the environment, due to its rapid biodegradation and hydrophilicity.