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Description of key information

No oxidising potential, train test, EU Method A.17, Calmels 1996.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

The oxidising properties of the test material were determined in a key study performed by Calmels (1996). The study was conducted under GLP conditions and in line with the standardised guidelines EU Method A.17 and AFNOR NF T 20-035 using the train test. Based on the principles for assessing data quality defined by Klimisch et al (1997), this study was assigned a reliability score of 1.

The test material was prepared as a mixture with cellulose at 5 to 90% weight of test material in 5 and 10% increments for the first series. For the second series mixtures of 5/95%, 10/90% and 15/85% (w/w) were selected. The test material/cellulose mixtures were prepared into piles and each pile was ignited at one end and the time of combustion over 200 mm after the burning of an initial distance of 30 mm (approximately) was measured.

A mixture with Barium nitrate / cellulose (60/40% w/w) was prepared under the same conditions and used as the reference.

The maximum values of burning rate with mixture containing the test material / cellulose at 5/95%, 10/90% and 15/85% w/w were 2.17, 1.65 and 0.93 mm/s, respectively. The maximum burning rate of the test material was lower than that obtained for the reference substance.

Under the conditions of the test, the test material was considered to not present oxidising properties.

Justification for classification or non-classification

In accordance with criteria for classification as defined in Annex I, Regulation 1272/2008, the test material does not require classification as oxidising as the test material/cellulose mixtures failed to propagate a flame to any appreciable extent. Although the reference substance used in the study was different to that used in the guideline method for classification under CLP, the maximum burning rate of the test material was considerably below the reference substance. The test was therefore considered adequate for assessment of the risk of physical hazards arising from the test material.