What is the primary hazard associated with materials classified under DOT Hazard Class 5?

Materials classified under DOT Hazard Class 5 are primarily associated with oxidation. This class is divided into two divisions:

• Division 5.1, which includes oxidizers that can cause or enhance the combustion of other materials by supplying oxygen.

• Division 5.2, which covers organic peroxides, which are thermally unstable and can undergo violent decomposition.

The significance of oxidation in this context is critical because oxidizers can react violently with combustible materials, leading to fires or explosions. Understanding the properties of oxidizers is essential for safe handling, storage, and transportation to prevent incidents involving fire or chemical reactions.

While aspects like corrosion and combustibility might relate to hazards encountered with chemicals, they do not capture the primary danger associated with materials in Hazard Class 5. The focus on oxidation clearly identifies the unique risks posed by these materials, emphasizing their role in enhancing combustion rather than merely being flammable themselves.