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Physical & Chemical properties

Oxidising properties

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Description of key information

no oxidising properties (EU A.17, test with reference substance barium nitrate)

Key value for chemical safety assessment

Oxidising properties:

Additional information

On the basis of the chemical structure the substance 2-methyl-N-(4-sulfamoylphenyl) prop-2-enamide (SPM-N) is incapable of reacting exothermically with combustible materials. This conclusion is supported by the result of the test performed according to EU Method A.17 (reference substance: barium nitrate). In air atmosphere the maximum burning rate for the test substance was 0.89 mm/s (10/90, w/w test substance/cellulose mixture), which was significantly higher than the maximum burning rate for the reference substance (0.68 mm/s, 60/40 w/w reference substance/cellulose mixture). It was interpreted as a false positive result and the test was repeated in an inert test atmosphere (nitrogen with 9 - 10% oxygen). The test substance/cellulose mixture (10/90 w/w) could not be ignited under these conditions.

Justification for classification or non-classification

The available data on oxidising properties of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008 or Directive 67/548/EEC, and are therefore conclusive but not sufficient for classification: Based on the chemical structure the substance is not oxidising. The outcome of the test according to EU Method 17 (reference substance: barium nitrate) supports this conclusion.