Registration Dossier
Registration Dossier
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EC number: 918-452-0 | CAS number: -
Oxidising properties
Administrative data
Link to relevant study record(s)
Description of key information
UN test O.1 waived on basis of non-testing data: expert judgement and experience in handling and use
Key value for chemical safety assessment
- Oxidising properties:
- no
Additional information
The UVCB is a inorganic and complex metal containing substance. It contains metal oxides (iuclid 4.23 chemical and mineralogical composition of a representative UVCB) that are likely to exhibit oxidizing properties. However, the evaluation of the detailed chemical and mineralogical structures by a mineralogical expert does not confirm the propensy of the UVCB to oxidize other substances (Liipo et al, 2010).
Further considerations include granulometry: material is massive (see IUCLID 4.1 sampling protocol for picture). The D50of crushed representative samples are even more above 3000 µm (see IUCLID 4.5 particle size distribution). The granulometry therefore support the conclusion “non oxidizing”
Additional consideration taken into account by expert judgement: results of Thermogravimetric test in air flux
TG in air flux (iuclid 4.12) demonstrated that oxidation of the material itself starts ca. 600°C (or above) and therefore thermal stability of the UVCB under oxygen /air atmosphere. The curve furthermore show that no exothermic reaction (or reaction above ca 700°C) take place in air flux.
Justification for classification or non-classification
Experience in the handling and use of the substance confirm that the substance does not exhibit oxidising properties
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