Using the United Nations/Department of Transportation Labeling System, a flammable liquid would receive a hazard classification of:

Using the United Nations/Department of Transportation Labeling System, a flammable liquid would receive a hazard classification of:

• A. 1
• B. 2
• C. 4
• D. 3

Answer: (D)

In this labeling system the hazard type is shown by a class number. Flammable liquids are assigned to Class 3, which signals a fire risk tied to liquids that can ignite under ordinary handling conditions (typically defined by a flash point not exceeding 60°C). The other numbers correspond to different hazard classes: Class 1 is explosives, Class 2 is gases, and Class 4 is flammable solids. So the appropriate classification for a flammable liquid is Class 3.

In this labeling system the hazard type is shown by a class number. Flammable liquids are assigned to Class 3, which signals a fire risk tied to liquids that can ignite under ordinary handling conditions (typically defined by a flash point not exceeding 60°C). The other numbers correspond to different hazard classes: Class 1 is explosives, Class 2 is gases, and Class 4 is flammable solids. So the appropriate classification for a flammable liquid is Class 3.