Which hazard class is indicated by a placard illustrating oxidizers?

Which hazard class is indicated by a placard illustrating oxidizers?

• A. Explosives
• B. Flammable Solids
• C. Oxidizers
• D. Poisonous Materials

Answer: (C)

When you see a placard with the oxidizer symbol, it identifies the oxidizers hazard class (Class 5.1). Oxidizers don’t have to burn themselves, but they release oxygen or otherwise promote oxidation, which can cause or greatly accelerate fires. That’s why the placard signals this specific danger and not other classes. It’s distinct from explosives, which involve blast hazards, and from poisonous materials, which indicate toxicity. Keeping oxidizers away from fuels and organic materials and handling them with appropriate precautions reflects the unique risk they pose.

When you see a placard with the oxidizer symbol, it identifies the oxidizers hazard class (Class 5.1). Oxidizers don’t have to burn themselves, but they release oxygen or otherwise promote oxidation, which can cause or greatly accelerate fires. That’s why the placard signals this specific danger and not other classes. It’s distinct from explosives, which involve blast hazards, and from poisonous materials, which indicate toxicity. Keeping oxidizers away from fuels and organic materials and handling them with appropriate precautions reflects the unique risk they pose.