What class or division number is assigned to flammable liquids?

What class or division number is assigned to flammable liquids?

• A. 2
• B. 6
• C. 9
• D. 3

Answer: (D)

Hazard classifications use numbers to indicate the type of hazard, and flammable liquids are identified by Class 3 because they can ignite and burn readily. In many systems, Class 3 can also be referenced with a division, where 3.1 denotes flammable liquids and 3.2 covers combustible liquids. The other numbers shown correspond to different hazard classes—Class 2 is gases, Class 6 is toxic substances, and Class 9 covers miscellaneous dangerous goods—so they don’t apply to flammable liquids. Therefore, the correct designation for flammable liquids is Class 3.