Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in soil

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Administrative data

Link to relevant study record(s)

biodegradation in soil: simulation testing
Data waiving:
other justification
Justification for data waiving:
Justification for type of information:
The study does not need to be conducted because the substance is inorganic.
The surface treatment applied does not modify the properties of the substance.
This justification applies to both sets of nanos: the "Zinc oxide nano with and without hydrophilic surface treatment" set and the "Zinc oxide nano - hydrophobic surface treatment" set.

Description of key information

Biodegradation is not applicable to metals/inorganic substances, study does not need to be conducted if substance is inorganic (Annex VII of REACH regulation).

The surface treatments applied to the hydrophilic set of nanoforms are not readily biodegradable.

Key value for chemical safety assessment

Additional information