Which of the following is NOT classified as HAZMAT?

The classification of hazardous materials (HAZMAT) is based on the potential risks and safety concerns they pose during handling and use. Compressed gases, liquid oxygen, and aerosols all have properties that can make them hazardous.

Compressed gases can be under high pressure, posing risks of explosions or rapid release if not handled properly. Liquid oxygen is a strong oxidizer, which means it can significantly enhance combustion, leading to fire or explosion hazards when in the presence of flammable materials. Aerosols can contain flammable propellants or toxic substances, making them a concern for both fire safety and inhalation hazards.

In contrast, standard tools do not possess inherent hazardous characteristics that classify them as HAZMAT. They are generally safe to use in maintenance or repair work, as they do not react or pose threats like the other materials mentioned. This distinction highlights why standard tools are not categorized under HAZMAT regulations. It is essential to recognize the properties of different substances and materials to ensure safety protocols are accurately applied in work environments.