Which of the following is not a characteristic of a hazardous material?

Inertness is indeed not a characteristic of hazardous materials. Hazardous materials are typically defined by their ability to pose risks to health, safety, and the environment due to certain properties. Corrosiveness, reactivity, and flammability are all known hazardous characteristics that indicate a material can cause harm if not handled properly.

Corrosive materials can damage living tissue, metals, and other materials, posing significant risks during transport and storage. Reactive materials can undergo dangerous reactions when in contact with other substances, leading to explosions or the release of toxic gases. Flammable materials can ignite easily and contribute to fire hazards. In contrast, inert materials are stable and do not readily react with other substances, making them less of a concern in terms of hazard classification. Thus, identifying inertness as a non-hazardous quality aligns with the way hazardous materials are categorized.