GHS hazard statement
H271: May cause fire or explosion; strong Oxidizer
- H271
- Physical hazards
- Danger
H271 means “May cause fire or explosion; strong Oxidizer”. It is a GHS hazard statement for Oxidizing liquids; Oxidizing solids (Category 1), shown with GHS03 under the signal word “Danger”.
Hazard class and category
| Hazard class | Category | Pictogram | Signal word | UN transport class |
|---|---|---|---|---|
| Oxidizing liquids; Oxidizing solids | Category 1 |  | Danger | Div 5.1 |
What H271 means
Oxidizing liquids and solids are substances that may, generally by yielding oxygen, cause or contribute to the combustion of other material, though they are not necessarily combustible themselves.
The material can start or intensify a fire when it meets combustible materials such as wood, paper, oil or clothing, and in some cases can cause an explosion when mixed with them.
What to do
Keep away from heat and from clothing and other combustible materials, never mix or store with fuels or reducing agents, avoid contamination, and keep containers closed in a cool place.
This is general guidance for the hazard class. The safety data sheet for your product always takes precedence.
Precautionary statements for H271
The GHS lists these precautionary statements for this hazard. Which ones appear on a label depends on the supplier's classification.
| Code | Statement |
|---|---|
| P210 | Keep away from heat, hot surface, sparks, open flames and other ignition sources. No smoking. |
| P220 | Keep away from clothing and other combustible materials. |
| P280 | Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... |
| P283 | Wear fire resistant or flame retardant clothing. |
| P306+P360 | IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes. |
| P371+P380+P375 | In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion. |
| P370+P378 | In case of fire: Use ... to extinguish. |
| P420 | Store separately. |
| P501 | Dispose of contents/container to ... |
Chemicals carrying H271
2 chemicals in our database. Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.
H271 frequently asked questions
What does H271 mean?
H271 means "May cause fire or explosion; strong Oxidizer". It is a GHS hazard statement in the physical hazards group, covering Oxidizing liquids; Oxidizing solids (Category 1).
Which pictogram goes with H271?
H271 is shown with GHS03 (Flame Over Circle).
What signal word goes with H271?
The signal word for H271 is "Danger".
Which precautionary statements go with H271?
The GHS data lists 9 precautionary statements for H271, including P210, P220, P280, P283, P306+P360. They cover prevention, response, storage and disposal. The full list is on this page.
Hazard statements describe the hazard of a classified substance or mixture. The classification of a specific product can differ, so use the supplier's SDS.
https://pubchem.ncbi.nlm.nih.gov/ghs/ghscode_10.txt (UN GHS Revision 10, retrieved 2026-10-12)