Which DOT Hazard Class includes Flammable solids?

Which DOT Hazard Class includes Flammable solids?

• A. Hazard Class 4
• B. Hazard Class 3
• C. Hazard Class 5
• D. Hazard Class 6

Answer: (A)

Flammable solids are categorized under Hazard Class 4. This class is reserved for solids that can ignite or sustain combustion under certain conditions. It’s divided into three parts: 4.1 flammable solids, 4.2 solids that release flammable gases when in contact with water, and 4.3 substances that may ignite spontaneously or when heated. The other classes cover different hazards: Class 3 is for flammable liquids, Class 5 for oxidizers and organic peroxides, and Class 6 for toxic or infectious substances, so they don’t describe flammable solids.

Flammable solids are categorized under Hazard Class 4. This class is reserved for solids that can ignite or sustain combustion under certain conditions. It’s divided into three parts: 4.1 flammable solids, 4.2 solids that release flammable gases when in contact with water, and 4.3 substances that may ignite spontaneously or when heated. The other classes cover different hazards: Class 3 is for flammable liquids, Class 5 for oxidizers and organic peroxides, and Class 6 for toxic or infectious substances, so they don’t describe flammable solids.