Which hazard is indicated by the GHS symbol for an oxidizer?

• A. Explosives
• B. Environmental Hazard
• C. Oxidizer
• D. Corrosive

Answer: (C)

The key idea is recognizing what the oxidizer symbol on a GHS label tells you about a substance. An oxidizer is a material that can release or supply oxygen and thus support or accelerate combustion. That’s why it’s flagged as a hazard: it can start fires more easily or make existing fires burn more intensely, even if there isn’t an obvious flame present. Because of that, you treat oxidizers as incompatible with fuels, reducing agents, and organic materials, since mixing them can lead to vigorous or violent reactions.

Examples you might encounter include compounds like nitrates or peroxides that release oxygen under the right conditions. This isn’t about being harmful to the environment, corrosive to metals and tissue, or being an explosive itself; those are different hazards with their own symbols. So the correct association is the oxidizer hazard, indicating the material’s potential to promote combustion.