Which class would a compressed gas typically belong to?

A compressed gas typically belongs to Class 2 because this class specifically includes gases that are either compressed, liquefied, or dissolved under pressure. The classification of dangerous goods is organized to reflect the hazards they present. Class 2 includes flammable gases, non-flammable gases, and toxic gases, which are common characteristics of compressed gas materials. Understanding this classification is crucial for safely handling, storing, and transporting compressed gases, as specific regulations and guidelines apply to mitigate risks associated with these materials.

In contrast, the other classes (such as Class 3, which encompasses flammable liquids, or Class 4, which includes flammable solids and substances that can spontaneously combust) do not specifically relate to compressed gases, therefore making Class 2 the appropriate context for this question.