Flame over circle (GHS03)
The GHS pictogram for oxidizers: oxidizing gases, liquids and solids.
Easily confused with
How to read it
It is GHS03. OSHA’s standard assigns it to oxidizing gases and oxidizing liquids, and Canada’s WHMIS lists oxidizing gases (category 1) and oxidizing liquids and solids (categories 1 to 3). In Great Britain it is called Oxidising.
Also searched as: GHS03, oxidizer symbol.
These identify the hazard class a pictogram represents. For handling, storage and first aid, refer to the product's label and safety data sheet.
Look-alikes
The Flame (GHS02) on its own marks things that are flammable; the flame over a circle marks oxidizers. Britain’s Health and Safety Executive names the two pictograms Flammable and Oxidising.
Read next
- Next in Hazard symbolsGas cylinder (GHS04)The GHS pictogram for gases under pressure: compressed, liquefied, refrigerated liquefied and dissolved gases.
- The same shape in Accessibility symbolsAccessible Icon (dynamic wheelchair symbol)A wheelchair symbol with the figure leaning forward and an arm swept back on the wheel, from the Accessible Icon Project. It marks the same accessible places as the International Symbol of Access; the project put it in the public domain.
More hazard symbols
The same shape elsewhere
Browse symbols drawn with circles, curves and waves or diamonds.
Sources
- Allocation of Label Elements (29 CFR 1910.1200, Appendix C), 29 CFR 1910.1200 Appendix C, U.S. Occupational Safety and Health Administration, C.4.17, C.4.26
- WHMIS - Pictograms (OSH Answers), Canadian Centre for Occupational Health and Safety
- Hazard pictograms (symbols), GB CLP, Health and Safety Executive (Great Britain)
- GHS Classification (Rev.11, 2025) Summary, PubChem, U.S. National Library of Medicine
Researched, edited and approved by Rory Hansen before publishing. Last reviewed September 25, 2026. How we research
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