Analyze an SDS

GHS hazard statement

H284: Chemical under pressure: may explode if heated

  • H284
  • Physical hazards
  • Warning

H284 means “Chemical under pressure: may explode if heated”. It is a GHS hazard statement for Chemicals under pressure (Category 3), shown with GHS04 under the signal word “Warning”.

Hazard class and category

Hazard classCategoryPictogramSignal wordUN transport class
Chemicals under pressureCategory 3
GHS pictogram GHS04: Gas Cylinder
WarningDiv 2.2

What H284 means

Chemicals under pressure are liquids or solids (often pastes or powders) pressurized with a gas in a pressure receptacle, other than an aerosol dispenser.

The container is pressurized and can burst if it is heated. The contents may also be flammable.

What to do

Protect from sunlight and heat, do not pierce or burn the container, and keep away from ignition sources if the product is also flammable.

This is general guidance for the hazard class. The safety data sheet for your product always takes precedence.

Precautionary statements for H284

The GHS lists these precautionary statements for this hazard. Which ones appear on a label depends on the supplier's classification.

CodeStatement
P210Keep away from heat, hot surface, sparks, open flames and other ignition sources. No smoking.
P376Stop leak if safe to do so.
P410+P403Protect from sunlight. Store in a well-ventilated place.

Chemicals carrying H284

No chemicals in our database are classified with H284 yet.

H284 frequently asked questions

What does H284 mean?

H284 means "Chemical under pressure: may explode if heated". It is a GHS hazard statement in the physical hazards group, covering Chemicals under pressure (Category 3).

Which pictogram goes with H284?

H284 is shown with GHS04 (Gas Cylinder).

What signal word goes with H284?

The signal word for H284 is "Warning".

Which precautionary statements go with H284?

The GHS data lists 3 precautionary statements for H284, including P210, P376, 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)