What type of substances are included in Class 3 materials?

Class 3 materials are specifically categorized as flammable liquids. This class includes substances that have a flash point of 60 degrees Celsius (140 degrees Fahrenheit) or lower. Flammable liquids are vital to understand in the context of hazardous materials transportation because they can easily ignite and pose significant fire risks. These substances are commonly found in various industries, including petroleum, paint, and certain chemicals.

Other classes of materials fall under different categories. For instance, corrosive substances can damage living tissue or materials upon contact; noxious substances are harmful to health and the environment; and oxidizing agents can cause or enhance the combustion of other materials. However, they do not fit within Class 3, which is strictly focused on flammable liquids. Understanding this classification is essential for safety in transportation and handling practices.