Gas cylinder (GHS04)
The GHS pictogram for gases under pressure: compressed, liquefied, refrigerated liquefied and dissolved gases.
These identify the hazard class a pictogram represents. For handling, storage and first aid, refer to the product's label and safety data sheet.
How to read it
It is GHS04. Canada’s WHMIS lists it for those four kinds of gas under pressure and for chemicals under pressure. Chemicals under pressure in categories 1 and 2 carry the Flame (GHS02) as well, both in Canada and on US labels, where OSHA’s standard shows the gas cylinder and flame together for them. In Great Britain it is called Gas under pressure.
Also searched as: compressed gas symbol, GHS04.
More hazard symbols
Sources
- Allocation of Label Elements (29 CFR 1910.1200, Appendix C), 29 CFR 1910.1200 Appendix C, U.S. Occupational Safety and Health Administration, C.4.16, C.4.18
- WHMIS - Pictograms (OSH Answers), Canadian Centre for Occupational Health and Safety
- Hazard pictograms (symbols), GB CLP, Health and Safety Executive (Great Britain)
- GHS Classification (Rev.11, 2025) Summary, PubChem, U.S. National Library of Medicine
Last reviewed September 25, 2026 by Rory Hansen. How we research