Registration Dossier

Environmental fate & pathways

Hydrolysis

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with Annex VIII, column 2 a study does not need to be conducted if the substance is not readily biodegradable or if it is highly insoluble in water. Although sodium hydrogen difluoride cannot be waived on this basis, the substance fully dissociates into its constituent ions in aqueous environments (Na+, H+ and F- ions will be formed in aqueous environments) and therefore further data is not required.

Key value for chemical safety assessment

Additional information

In accordance with Annex VIII, column 2 a study does not need to be conducted if the substance is not readily biodegradable or if it is highly insoluble in water. Although sodium hydrogen difluoride cannot be waived on this basis, the substance fully dissociates into its constituent ions in aqueous environments (Na+, H+ and F- ions will be formed in aqueous environments) and therefore further data is not required.