Oxidizer: Flame Over Circle
The flame over circle pictogram indicates oxidizing substances that can cause or intensify fires by providing oxygen, even without an external air source.
Oxidizers are substances that, while not necessarily combustible themselves, can cause or contribute to the combustion of other materials by releasing oxygen or other oxidizing substances.
This makes them particularly dangerous when stored near flammable materials, as they can dramatically accelerate fire spread and intensity.
Common oxidizers include hydrogen peroxide, potassium permanganate, and many pool chemicals. They require dedicated storage areas separated from flammable and combustible materials.
Hazard Classes
- Oxidizing Gases (Cat. 1)
- Oxidizing Liquids (Cat. 1-3)
- Oxidizing Solids (Cat. 1-3)
Common Examples
- Hydrogen peroxide (>8%)
- Potassium permanganate
- Sodium hypochlorite
- Calcium hypochlorite
- Ammonium persulfate
Hazard Statements
- H270: May cause or intensify fire; oxidizer
- H271: May cause fire or explosion; strong oxidizer
- H272: May intensify fire; oxidizer
Oxidizer Storage Distance
Oxidizer Storage Separation Guide
Select your oxidizer category to see minimum storage requirements.
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