A substance that readily yields oxygen to support combustion would be labeled Hazard Class _____ under the UN/DOT labeling system.

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Multiple Choice

A substance that readily yields oxygen to support combustion would be labeled Hazard Class _____ under the UN/DOT labeling system.

Explanation:
Oxidizers are substances that readily yield oxygen to support or intensify combustion. In the UN/DOT labeling system, oxidizing materials are designated as Hazard Class 5 (including oxidizers and organic peroxides). That’s why the described substance belongs to Class 5. For context, Class 2 covers gases, Class 3 covers flammable liquids, and Class 4 covers flammable solids.

Oxidizers are substances that readily yield oxygen to support or intensify combustion. In the UN/DOT labeling system, oxidizing materials are designated as Hazard Class 5 (including oxidizers and organic peroxides). That’s why the described substance belongs to Class 5. For context, Class 2 covers gases, Class 3 covers flammable liquids, and Class 4 covers flammable solids.

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