What term describes Class 5 Substances that are not necessarily combustible but can yield oxygen that causes or contributes to the combustion of other material?

• A. Oxidizing Substances
• B. Flammable Substances
• C. Corrosive Substances
• D. Toxic Substances

Answer: (A)

Oxidizing substances are materials that release oxygen or create conditions that promote oxidation, helping other fuels burn more readily. They may not burn themselves, but they can cause or amplify combustion of nearby materials by supplying oxygen. In Class 5, this property is the key identifier. Examples include nitrates, chlorates, and peroxides. The other options describe hazards that aren’t about promoting combustion: flammable substances burn themselves, corrosive substances damage materials or skin, and toxic substances pose health hazards.