Which of the following is NOT considered hazardous material (HAZMAT)?

General office supplies are typically not classified as hazardous materials (HAZMAT) because they do not pose a significant risk to health and safety during normal use. HAZMAT is generally defined as substances that can be harmful due to their chemical properties, such as being flammable, corrosive, toxic, or reactive.

In contrast, Class A combustibles, liquid oxygen, and other materials often involved in aviation operations can present significant safety risks. Class A combustibles are flammable solids that can ignite easily, while liquid oxygen is highly reactive and can cause fires or explosions if it comes in contact with combustible materials. Therefore, general office supplies—common items such as pens, paper, and standard cleaning materials—are not associated with hazardous characteristics in the context of aviation or industrial environments.