Which class of hazardous materials includes explosives?

The class of hazardous materials that includes explosives is indeed Class 1. This classification pertains specifically to substances and articles that are defined as explosives, meaning they are capable of undergoing a rapid chemical reaction that releases energy, often in the form of gas and heat. Class 1 materials encompass a wide variety of explosive items, including dynamite, fireworks, and ammunition.

Class 1 is subdivided into several divisions that account for different types of explosives, such as those that have a mass explosion hazard or a projection hazard. The categorization helps in determining the necessary safety measures for handling and transportation, making it a crucial aspect of hazardous materials training.

In contrast, the other classes focus on different types of hazards. Class 2 deals with gases, Class 3 involves flammable liquids, and Class 4 includes solids that are flammable or reactive. Understanding these classifications is essential for safe fire operations and response to hazardous material emergencies.