# Commission Directive 2004/73/EC of 29 April 2004 adapting to technical progress for the twenty-ninth time Council Directive 67/548/EEC on the approximation of the laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (Text with EEA relevance), Division 3.2: INTERPRETATION OF THE RESULTS

Extent: E+W+S+N.I.

The test results are assessed on the basis of:
a)) whether the mixture of test substance and cellulose spontaneously ignites; and
b)) the comparison of the mean time taken for the pressure to rise from 690 kPa to 2070 kPa with that of the reference substance(s).
A liquid substance is to be considered as an oxidizer when:
a)) a 1:1 mixture, by mass, of the substance and cellulose spontaneously ignites; or
b)) a 1:1 mixture, by mass, of the substance and cellulose exhibits a mean pressure rise time less than or equal to the mean pressure rise time of a 1:1 mixture, by mass, of 65% (w/w) aqueous nitric acid and cellulose.
In order to avoid a false positive result, if necessary, the results obtained when testing the substance with an inert material should also be considered when interpreting the results.

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Source: https://www.legislation.gov.uk/eudr/2004/73/annex/n2/division/A.21/division/3/division/3.2 (the official version)
Page: https://openlegislation.uk/eu-directive-2004-73/annex-n2/division-A.21/division-3/division-3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.