Flammable Solids fall under which Dangerous Goods Class?

Flammable Solids fall under which Dangerous Goods Class?

• A. Class 5
• B. Class 7
• C. Class 4
• D. Class 8

Answer: (C)

Flammable solids are grouped with other solids that pose a burning risk, so they belong in Class 4. The reason is that their danger comes from the ability to ignite and burn readily, not from being a liquid or a gas. Class 4 covers three subtypes: solids that ignite under normal conditions (flammable solids), substances that can ignite spontaneously in air, and materials that become dangerous when wet. This classification helps handlers know how to package, label, and store these items and what precautions to take on board. The other classes mentioned aren’t the same hazard: Class 5 covers oxidizers and organic peroxides, which fuel or sustain fires but aren’t specifically “flammable solids”; Class 7 covers radioactive materials; Class 8 covers corrosives. So the correct designation for flammable solids is Class 4.

Flammable solids are grouped with other solids that pose a burning risk, so they belong in Class 4. The reason is that their danger comes from the ability to ignite and burn readily, not from being a liquid or a gas. Class 4 covers three subtypes: solids that ignite under normal conditions (flammable solids), substances that can ignite spontaneously in air, and materials that become dangerous when wet. This classification helps handlers know how to package, label, and store these items and what precautions to take on board.

The other classes mentioned aren’t the same hazard: Class 5 covers oxidizers and organic peroxides, which fuel or sustain fires but aren’t specifically “flammable solids”; Class 7 covers radioactive materials; Class 8 covers corrosives. So the correct designation for flammable solids is Class 4.