# 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 2.1: TREATMENT OF RESULTS

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

The mean pressure rise times for both the test substance and the reference substances(s) are calculated.
The mean pressure rise time for the tests with an inert substance (if performed) is calculated.
Some examples of results are shown in Table 1
Table 1
Examples of results
Mean value from interlaboratory comparative trials
Maximum pressure of 2070 kPa not reached
Saturated solutions should be prepared at 20 oC
See reference (1) for classification under the UN transport scheme,
Substance
Mean pressure rise time for a 1:1 mixture with celulose (ms)
Ammonium dichromate, saturated aqueous solution
20800
Calcium nitrate, saturated aqueous solution
6700
Ferric nitrate, saturated aqueous solution
4133
Lithium perchlorate, saturated aqueous solution
1686
Magnesium perchlorate, saturated aqueous solution
777
Nickel nitrate, saturated aqueous solution
6250
Nitric acid, 65 %
4767
Perchloric acid, 50 %
121
Perchloric acid, 55 %
59
Potassium nitrate, 30 % aqueous solution
26690
Silver nitrate, saturated aqueous solution
-
Sodium chlorate, 40 % aqueous solution
2555
Sodium nitrate, 45 % aqueous solution
4133
Inert Substance
Water:cellulose
-

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Source: https://www.legislation.gov.uk/eudr/2004/73/annex/n2/division/A.21/division/2/division/2.1 (the official version)
Page: https://openlegislation.uk/eu-directive-2004-73/annex-n2/division-A.21/division-2/division-2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.