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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
oxidising solids
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is incapable of reacting exothermically with combustible materials

Description of key information

Molybdenum has no oxidising properties.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification

Molybdenum metal does not require classification for oxidising properties. Molybdenum metal does not contain a surplus of oxygen or any structural groups known to be correlated with a tendency to react exothermally with combustible material (cf. Annex VII section 7.13, Column 2 of Regulation 1907/2006). In addition, a test according to UN method O.1 was conducted with molybdenum trioxide and revealed that MoO3 does not exhibit oxidising properties. Since MoO3 represents the molybdenum compound with the highest oxidation state, it is concluded by way of extrapolation that molybdenum metal should also be considered to lack such oxidising properties.