# Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006 (Text with EEA relevance), Division 2.5.4: Additional Classification Considerations

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

For this group of gases, the following information is required to be known:
the vapour pressure at 50 oC;
the physical state at 20 oC at standard ambient pressure;
the critical temperature.
Data can be found in the literature, calculated or determined by testing. Most pure gases are already classified in the UN RTDG, Model Regulations.

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Source: https://www.legislation.gov.uk/eur/2008/1272/annex/I/division/2/division/2.5/division/2.5.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-1272/annex-I/division-2/division-2.5/division-2.5.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.