GHS hazard class · Physical hazards
Oxidizing gases
Oxidizing gases are gases that may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does.
What it means
Materials burn much more fiercely in an oxidizing gas than in air. Grease, oil and clothing can ignite more easily.
What to do
Keep away from combustible materials and keep fittings free of oil and grease, use equipment rated for the gas, and keep cylinders secured and away from heat.
This is general guidance for the class. Your product's safety data sheet takes precedence.
Categories and hazard statements
| Code | Category | Statement | Pictogram | Signal word |
|---|---|---|---|---|
| H270 | Category 1 | May cause or intensify fire; oxidizer | GHS03 | Danger |
Chemicals with oxidizing gases hazard codes
Chemicals in our database whose primary classification includes any current Oxidizing gases code (H270).
2 chemicals in our database. Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.
Oxidizing gases: frequently asked questions
What is the GHS hazard class "Oxidizing gases"?
Oxidizing gases are gases that may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does.
Which hazard statements belong to Oxidizing gases?
The current hazard statements for this class are H270.
Which pictograms and signal words are used for Oxidizing gases?
Pictograms: GHS03 (Flame Over Circle). Signal word: Danger, depending on the category.
What should I do when working with a oxidizing gases hazard?
Keep away from combustible materials and keep fittings free of oil and grease, use equipment rated for the gas, and keep cylinders secured and away from heat.
https://pubchem.ncbi.nlm.nih.gov/ghs/ghscode_10.txt (UN GHS Revision 10, retrieved 2026-10-12)