Which hazard class is specifically associated with explosive materials?

The hazard class specifically associated with explosive materials is Class 1. This classification includes substances and articles that pose a risk of explosion or a similar hazard due to their ability to undergo a rapid chemical reaction, resulting in pressure waves and fragmentation. Explosives can be sensitive to heat, shock, and friction, making them particularly dangerous in certain conditions.

Class 1 is further subdivided into divisions based on the type and nature of the explosive hazard. For instance, it includes items like dynamite, fireworks, and ammunition, all of which present significant risks that necessitate stringent handling, transportation, and storage regulations.

In comparison, the other classes pertain to different types of hazards. Class 2 covers gases, Class 3 includes flammable liquids, and Class 4 refers to flammable solids, reactive materials, or substances that are dangerous when wet. Thus, each class addresses distinct characteristics of hazardous materials, underscoring why Class 1 is the designated classification for explosives.