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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Oxidising properties

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oxidising solids
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied
the study does not need to be conducted because the substance is a solid

Description of key information

Key value for chemical safety assessment

Oxidising properties:

Additional information

This substance is the product of a reaction between zircon and sodium hydroxide. It contains oxygen as part of its chemical structure. However, this oxygen is part of the silicate moiety (ZrO32- and SiO42 -). This oxygen would not be available to oxidise other substances as the silicon cannot exist in a lower oxidation state and to decompose to elemental silicon would not be thermodynamically favourable. In accordance with column 2 of REACH Annex VII, the oxidising properties study does not need to be conducted as the substance is incapable of reacting exothermically with combustible materials on the basis of its chemical structure.

Justification for classification or non-classification