H280 · Hazard statementContains gas under pressure; may explode if heated

Hazard statementPhysical

H280 is the GHS hazard statement “Contains gas under pressure; may explode if heated”. It is used for Gases under pressure (chapter 2.5), Category Compressed gas Liquefied gas Dissolved gas. The English wording is the same as UN GHS Rev.11 in US OSHA, EU CLP and Canada. Canada’s official French text is “Contient un gaz sous pression ; peut exploser sous l’effet de la chaleur” and Mexico’s Spanish text is “Contiene gas a presión; puede explotar si se calienta”. The UN GHS Rev.11 label matrix lists 1 precautionary statement for it (UN only).

Maintained by Valenc. Data checked 2026-10-20.

Heading text: UN GHS Rev.11 Annex 3. Wording can differ by jurisdiction; see the table below.

Wording by jurisdiction

UN GHS Rev.11

Same as UN

GHS Rev.11 (2025), Annex 3

Contains gas under pressure; may explode if heated

UN GHS Rev.11, Annex 3, Table A3.1.1, PDF p. 303

US OSHA HCS

Same as UN

HCS 2024 · primarily GHS Rev.7, some Rev.8

Contains gas under pressure; may explode if heated

29 CFR 1910.1200 App. C, matched by wording

EU CLP

Same as UN

EU_CLP_2025 · consolidated 1 Jul 2026

Contains gas under pressure; may explode if heated.

EU CLP (Reg. (EC) No 1272/2008), Annex III, Part 1

Canada (EN)

Same as UN

WHMIS_2022 · GHS Rev.7 (Rev.8 for chemicals under pressure)

Contains gas under pressure; may explode if heated

GHS Rev.7 Annex 3 Table A3.1

Canada (FR)

Adopted

WHMIS_2022 · SGH Rév.7, texte officiel

Contient un gaz sous pression ; peut exploser sous l’effet de la chaleur

GHS Rev.7 Annex 3 Table A3.1

Mexico (ES)

Adopted

NOM-018-STPS-2015 · GHS 5th revised edition

Contiene gas a presión; puede explotar si se calienta

Gases a presión · Gas comprimido Gas licuado Gas disuelto

NOM-018-STPS-2015, DOF 9 October 2015, Apéndice C, Tabla C.1, PDF p. 30

Hazard classes and categories

Gases under pressure (chapter 2.5) · Category Compressed gas Liquefied gas Dissolved gas

UN GHS Rev.11 Annex 3, sections 1 and 2

FRGaz sous pression (chapitre 2.5) · catégorie Compressed gas Liquefied gas Dissolved gas

ESGases a presión · Gas comprimido Gas licuado Gas disuelto (NOM-018-STPS-2015)

Pictogram: Gas cylinder (GHS04)

UN GHS Rev.11 Annex 3, section 3. Pictogram rules can differ by jurisdiction; see the GHS pictogram guide.

P statements in the UN GHS Rev.11 label matrix only

UN GHS Rev.11 only. EU CLP, US OSHA, Canada (GHS Rev.7) and Mexico assign different P statements; check the regulation for your market.

Gases under pressure (chapter 2.5), categories Compressed gas, Liquefied gas, Dissolved gas (PDF p. 353)
P410+P403

UN GHS Rev.11 Annex 3, section 3. Each table covers the categories named; a P statement may apply to only some of them. Many apply only under conditions; check the conditions for use before putting them on a label.

Related codes

H281

Change in UN GHS Rev.11

No change to the wording or the hazard classes in Annex 3 compared with Rev.10.

Sources

Each cell in the table names the official table and page for H280. Full citations, links and revision notes for UN GHS Rev.11, US OSHA, EU CLP, Canada and Mexico: Sources and revision notes.

These are regulatory phrases for labels and safety data sheets. Check them against the official source for your jurisdiction before use.