Compressed Gas: Gas Cylinder
The gas cylinder pictogram warns that a container holds gas under pressure that may explode if heated, or can cause cryogenic burns if it contains refrigerated liquefied gas.
The GHS04 gas cylinder symbol applies to gases stored under pressure in cylinders, tanks, or other containers. These include compressed gases, liquefied gases, refrigerated liquefied gases, and dissolved gases.
The primary danger is that heating the container can cause catastrophic failure and explosion. Refrigerated liquefied gases also pose cryogenic hazards — direct contact can cause severe frostbite.
Proper handling requires securing cylinders upright, using appropriate regulators, and never exposing them to heat above the rated temperature of the container.
Hazard Classes
- Compressed Gas
- Liquefied Gas
- Refrigerated Liquefied Gas
- Dissolved Gas
Common Examples
- Nitrogen (compressed)
- CO₂ cylinders
- Oxygen tanks
- Acetylene (dissolved)
- Liquid nitrogen
- Propane tanks
Hazard Statements
- H280: Contains gas under pressure; may explode if heated
- H281: Contains refrigerated gas; may cause cryogenic burns or injury
- H282: Extremely flammable chemical under pressure
Gas Cylinder Pressure Estimator
Gas Volume at Atmospheric Pressure
Estimate how much gas a cylinder contains when released at atmospheric pressure (simplified ideal gas).
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