Division 2.5.4 Additional Classification Considerations

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.

F1Data can be found in the literature, calculated or determined by testing. Most pure gases are already classified in the UN RTDG, Model Regulations.