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Description of key information

The test material is not an oxidising solid. 

Key value for chemical safety assessment

Oxidising properties:

Additional information

The oxidising properties of the test material were investigated in line with GLP and in accordance with the standardised guidelines Test O.1 of the United Nations Recommendations on the Transport of Dangerous Goods Manual of Tests and Criteria, 5th revised edition 2009 and Section 2.14 of Regulation (EC) No 1272/2008 of 16 December 2008 on Classification Labelling and Packaging of Substances and Mixtures. It was assigned a reliability score of 1 in accordance with the criteria detailed by Klimisch (1997).

The burning time of mixtures of the test material with cellulose in the ratios of 4:1 and 1:1 (by mass) were determined and compared to the burning rate of a reference material. The reference was potassium bromated and cellulose mixed in a ratio of 3:7 (by mass).

The mean burning times of the 4:1 and 1:1 (by mass) mixtures of the test material and cellulose were 141 and 341 seconds, respectively. The mean burning time of the reference substance was 98 seconds.

Therefore, under the conditions of this study, the test material is not an oxidising solid. It requires no classification in accordance with either the UN or CLP regulations. 

Justification for classification or non-classification

Based on the above data, dierbium trioxide does not require a classification regarding its oxidising properties, neither under DSD, nor under CLP or UN GHS.