GHS hazard statement
H280: Contains gas under pressure; may explode if heated
- H280
- Physical hazards
- Warning
H280 means “Contains gas under pressure; may explode if heated”. It is a GHS hazard statement for Gases under pressure (Compressed gas, Liquefied gas, Dissolved gas), shown with GHS04 under the signal word “Warning”.
Hazard class and category
| Hazard class | Category | Pictogram | Signal word | UN transport class |
|---|---|---|---|---|
| Gases under pressure | Compressed gas, Liquefied gas, Dissolved gas |  | Warning | Div 2.2 |
What H280 means
Gases under pressure are gases held in a receptacle at a pressure of 200 kPa (gauge) or more, or gases that are liquefied or liquefied and refrigerated. The GHS distinguishes compressed, liquefied, refrigerated liquefied and dissolved gases.
The cylinder or vessel can burst if it is heated. Refrigerated liquefied gases can also cause cryogenic burns or injury on contact.
What to do
Protect cylinders from sunlight and heat, keep them upright and secured, store in a well-ventilated place, and for refrigerated liquefied gases wear cold-insulating gloves and eye or face protection.
This is general guidance for the hazard class. The safety data sheet for your product always takes precedence.
Precautionary statements for H280
The GHS lists these precautionary statements for this hazard. Which ones appear on a label depends on the supplier's classification.
| Code | Statement |
|---|---|
| P410+P403 | Protect from sunlight. Store in a well-ventilated place. |
Chemicals carrying H280
4 chemicals in our database. Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.
H280 frequently asked questions
What does H280 mean?
H280 means "Contains gas under pressure; may explode if heated". It is a GHS hazard statement in the physical hazards group, covering Gases under pressure (Compressed gas, Liquefied gas, Dissolved gas).
Which pictogram goes with H280?
H280 is shown with GHS04 (Gas Cylinder).
What signal word goes with H280?
The signal word for H280 is "Warning".
Which precautionary statements go with H280?
The GHS data lists 1 precautionary statements for H280, including P410+P403. 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)