What is the classification of Class 3 HazMats?

• A. Gases
• B. Oxidizers
• C. Flammable Liquids
• D. Radioactive Materials

Answer: (C)

Flammable liquids are Class 3 HazMats. The defining idea here is the flash point—the lowest temperature at which a liquid’s vapors can form an ignitable mixture with air. For Class 3, that flash point is at or below 60°C (140°F). So these liquids can ignite at relatively modest temperatures if an ignition source is present. That’s why substances like gasoline or many common solvents fall into this class.

Gases would be Class 2, since they’re identified by their gaseous state, not a liquid’s flash point. Oxidizers are Class 5.1 and are about materials that can promote combustion, not about liquids with low flash points. Radioactive materials are Class 7, dealing with radioactivity, not flammability.