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Description of key information

The substance does not have oxidising properties.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

For this endpoint one study is available. in this study the oxidising properties of the test item were assessed according to UN method O.1 .

A mixture of the reference item (Potassium bromate) and cellulose in a ratio of 3:7 by weight (positive control) and a mixture of the test item and cellulose in a ratio of 4:1 and 1:1 by weight were prepared. Each mixture was formed into a pile and ignited at one end. The maximum burning rate determined was compared with the maximum burning rate of the reference mixture. The test was repeated five times.

The burning time of the mixture of the test item with cellulose (both 4:1 and 1:1) was higher than the burning time of the reference mixture of the potassium bromate and cellulose (3:7) and therefore the substance does not have oxidising propreties.

Justification for classification or non-classification

The criteria in the CLP Regulation N° 1272/2008 indicate that a substance should be classified as Category 1 if 'a substance (in the 4:1 or 1:1 sample-to-cellulose ratio by mass) exhibits a mean burning time less than the mean burning time of a 3:2 mixture, by mass, of potassium bromate and cellulose', classified as Category 2 if 'a substance (in the 4:1 or 1:1 sample-to-cellulose ratio by mass) exhibits a mean burning time equal to or less than the mean burning time of a 2:3 mixture (by mass) of potassium bromate and cellulose and the criteria for Category 1 are not met' or classified as Category 3 if 'a substance (in the 4:1 or 1:1 sample-to-cellulose ratio by mass) exhibits a mean burning time equal to or less than the mean burning time of a 3:7 mixture (by mass) of potassium bromate and cellulose and the criteria for Categories 1 and 2 are not met'.

The key study demonstrated that the burning time of the test item mixture was higher that the burning time of the reference item. Therefore, according to the CLP Regulation the test item does not have to be classified as an oxidising solid.