Which hazard class includes explosives?

The correct answer identifies that explosives fall under Class 1 of hazardous materials. This class specifically encompasses substances and items that are capable of undergoing a rapid chemical reaction and producing a significant amount of pressure, heat, and gas. Class 1 is subdivided into different divisions based on the nature of the explosive and its potential hazards during transport.

Class 1 is essential in regulatory frameworks for hazardous materials transport and storage to ensure safety and proper handling. It is crucial for anyone working with or around such materials to understand the classifications, as this knowledge helps in managing risks effectively.

The other classes listed refer to different types of hazards. For instance, Class 2 pertains to gases, Class 3 to flammable liquids, and Class 4 covers flammable solids, self-reactive substances, and those that emit flammable gases when in contact with water. Each class has its own specific safety regulations and handling guidelines, illustrating the importance of correctly identifying and categorizing hazardous materials.