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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

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Endpoint:
biodegradation in water: simulation testing on ultimate degradation in surface water
Data waiving:
study technically not feasible
Justification for data waiving:
other:
Justification for type of 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 for biodegradability).

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.
Endpoint:
biodegradation in water: sediment simulation testing
Data waiving:
study technically not feasible
Justification for data waiving:
other:
Justification for type of 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 for biodegradability).

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