Physical hazard · Flammable gases
H220 — Extremely flammable gas
Physical hazard statements describe what the substance itself can do — explode, ignite, react, corrode metal. 177 substances with a harmonised EU classification carry this code.
EU CLP: currentUS OSHA HazCom: currentUS HazCom 2012: currentUN GHS: current
01 · Wording
What H220 says
Official
Extremely flammable gas.
Source
CLP Annex III · Physical hazards
Classification 
Flammable gases GHS chapter 2.2
Category 1A · pictogram GHS02 (flame) · signal word Danger
UN GHS history
Unchanged since 2009.
Rev.3 2009
Rev.4 2011
Rev.5 2013
Rev.6 2015
Rev.7 2017
Rev.8 2019
Rev.9 2021
Rev.10 2023
Rev.11 2025
wording never changed
Present in every UN GHS edition from Rev.3 (2009) to Rev.11 (2025), with the same wording throughout.
Nine editions of the UN model text, 86 hazard statements, 19 of which ever moved. Read the full story in what changed in UN GHS Rev.11.
02 · Languages
H220 in the 24 official EU languages
A label put on the market in an EU country must carry the wording of that country's own language version of CLP — not a translation of the English one. These 24 lines are quoted from the consolidated regulation, Annex III, and are the text to print.
| Language | Official wording of H220 |
|---|---|
| BG български Bulgarian | Изключително запалим газ. |
| ES español Spanish | Gas extremadamente inflamable. |
| CS čeština Czech | Extrémně hořlavý plyn. |
| DA dansk Danish | Yderst brandfarlig gas. |
| DE Deutsch German | Extrem entzündbares Gas. |
| ET eesti Estonian | Eriti tuleohtlik gaas. |
| EL ελληνικά Greek | Εξαιρετικά εύφλεκτο αέριο. |
| EN English English | Extremely flammable gas. |
| FR français French | Gaz extrêmement inflammable. |
| GA Gaeilge Irish | Gás fíor-inadhainte. |
| HR hrvatski Croatian | Vrlo lako zapaljivi plin. |
| IT italiano Italian | Gas altamente infiammabile. |
| LV latviešu Latvian | Īpaši viegli uzliesmojoša gāze. |
| LT lietuvių Lithuanian | Ypač degios dujos. |
| HU magyar Hungarian | Rendkívül tűzveszélyes gáz. |
| MT Malti Maltese | Gass li jaqbad malajr ħafna. |
| NL Nederlands Dutch | Zeer licht ontvlambaar gas. |
| PL polski Polish | Skrajnie łatwopalny gaz. |
| PT português Portuguese | Gás extremamente inflamável. |
| RO română Romanian | Gaz extrem de inflamabil. |
| SK slovenčina Slovak | Mimoriadne horľavý plyn. |
| SL slovenščina Slovenian | Zelo lahko vnetljiv plin. |
| FI suomi Finnish | Erittäin helposti syttyvä kaasu. |
| SV svenska Swedish | Extremt brandfarlig gas. |
Source: CELEX:02008R1272-20260501, Annex III. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic. Irish is one of the 24 official languages and its H and P texts are printed inside the multilingual Annex tables, but no consolidated CLP has ever been published in Irish — which is why an Irish-primary label cannot be built here.
03 · Legal status
Where H220 is current
GHS is a United Nations model text, revised every two years, and each jurisdiction adopts a revision on its own timetable. A code can be legally current in one system and deleted in another — that is normal, not an error.
| Jurisdiction | Basis | Status of H220 |
|---|---|---|
| EU CLP | Regulation (EC) 1272/2008 CLP Annex IV, Part 2 (consolidated) | Current |
| US OSHA HazCom | 29 CFR 1910.1200 Appendix C UN GHS Rev.7 (final rule of 20 May 2024) | Current |
| US HazCom 2012 | legacy · GHS Rev.3 UN GHS Rev.3, Annex 3 | Current |
| UN GHS | Rev.11 (2025) UN GHS Rev.11, Annex 3 | Current |
Currently in force under: EU CLP, US OSHA HazCom, US HazCom 2012, UN GHS. Sources: EU CLP · US OSHA HazCom · US HazCom 2012 · UN GHS
04 · Substances
Substances carrying H220
Every entry whose harmonised CLP Annex VI classification includes this hazard statement. Substances with a reference page here open on this site; the rest open on ghssymbols.com.
- 1,3-Butadiene CAS 106-99-0
- 2,2-dimethylpropane CAS 463-82-1
- acetylene CAS 74-86-2
- Alkanes, C1-2 CAS 68475-57-0
- Alkanes, C1-4, C3-rich CAS 90622-55-2
- Alkanes, C2-3 CAS 68475-58-1
- Alkanes, C3-4 CAS 68475-59-2
- Alkanes, C4-5 CAS 68475-60-5
- Arsine CAS 7784-42-1
- Bromoethene CAS 593-60-2
- but-1-ene [1] butene, mixed-1-and-2-isomers [2]… CAS 106-98-9
- butane [1] and isobutane [2] CAS 106-97-8
- Carbon Monoxide CAS 630-08-0
- Chloroethane CAS 75-00-3
- chloromethane CAS 74-87-3
- Cyclopropane CAS 75-19-4
- Dimethyl Ether CAS 115-10-6
- Distillates (petroleum), C3-6, piperylene-rich CAS 68477-35-0
- Ethane CAS 74-84-0
- ethyl methyl ether CAS 540-67-0
- Ethyl Nitrite CAS 109-95-5
- Ethylamine CAS 75-04-7
- Ethylene CAS 74-85-1
- ethylene oxide CAS 75-21-8
- Foots oil (petroleum), acid-treated CAS 93924-31-3
- Foots oil (petroleum), clay-treated CAS 93924-32-4
- Fuel gases CAS 68476-26-6
- Fuel gases, crude oil of distillates CAS 68476-29-9
- Gases (petroleum, light steam-cracked, butadiene conc.… CAS 68955-28-2
- Gases (petroleum), alkylation feed CAS 68606-27-9
- Gases (petroleum), amine system feed CAS 68477-65-6
- Gases (petroleum), benzene unit hydrodesulfurizer off CAS 68477-66-7
- Gases (petroleum), benzene unit hydrotreater… CAS 68602-82-4
- Gases (petroleum), benzene unit recycle, hydrogen-rich CAS 68477-67-8
- Gases (petroleum), blend oil, hydrogen-nitrogen-rich CAS 68477-68-9
- Gases (petroleum), butane splitter overheads CAS 68477-69-0
- Gases (petroleum), C1-5, wet CAS 68602-83-5
- Gases (petroleum), C2-3- CAS 68477-70-3
- Gases (petroleum), C2-4, sweetened CAS 68783-65-3
- Gases (petroleum), C2-return stream CAS 68477-84-9
- Gases (petroleum), C3-4 CAS 68131-75-9
- gases (petroleum), C3-4, isobutane-rich CAS 68477-33-8
- Gases (petroleum), C3-5 olefinic-paraffinic alkylation… CAS 68477-83-8
- Gases (petroleum), C4-rich CAS 68477-85-0
- Gases (petroleum), C6-8 catalytic reformer CAS 68477-81-6
- Gases (petroleum), C6-8 catalytic reformer recycle CAS 68477-80-5
- Gases (petroleum), C6-8 catalytic reformer recycle… CAS 68477-82-7
- Gases (petroleum), catalytic cracked naphtha… CAS 68952-76-1
- Gases (petroleum), catalytic cracked naphtha… CAS 68477-73-6
- Gases (petroleum), catalytic cracked overheads CAS 68409-99-4
- Gases (petroleum), catalytic cracker CAS 68477-74-7
- Gases (petroleum), catalytic cracker, C1-5-rich CAS 68477-75-8
- Gases (petroleum), catalytic cracking CAS 68783-64-2
- Gases (petroleum), catalytic polymd. naphtha… CAS 68477-76-9
- Gases (petroleum), catalytic reformed naphtha stripper… CAS 68477-77-0
- Gases (petroleum), catalytic reformed straight-run… CAS 68513-14-4
- Gases (petroleum), catalytic reformer, C1-4-rich CAS 68477-79-2
- Gases (petroleum), catalytic-cracked gas oil… CAS 68477-71-4
- Gases (petroleum), catalytic-cracked naphtha… CAS 68477-72-5
- Gases (petroleum), crude distn. and catalytic cracking CAS 68989-88-8
- Gases (petroleum), crude oil fractionation off CAS 68918-99-0
- Gases (petroleum), deethanizer overheads CAS 68477-86-1
- Gases (petroleum), dehexanizer off CAS 68919-00-6
- Gases (petroleum), deisobutanizer tower overheads CAS 68477-87-2
- Gases (petroleum), depropanizer bottoms fractionation… CAS 68606-34-8
- Gases (petroleum), depropanizer dry, propene-rich CAS 68477-90-7
- Gases (petroleum), depropanizer overheads CAS 68477-91-8
- Gases (petroleum), distillate unifiner desulfurization… CAS 68919-01-7
- Gases (petroleum), dry sour, gas-concn.-unit-off CAS 68477-92-9
- Gases (petroleum), fluidized catalytic cracker… CAS 68919-02-8
- Gases (petroleum), fluidized catalytic cracker… CAS 68919-03-9
- Gases (petroleum), fluidized catalytic cracker… CAS 68919-20-0
- Gases (petroleum), full-range straight-run naphtha… CAS 68513-15-5
- Gases (petroleum), gas concn. reabsorber distn. CAS 68477-93-0
- Gases (petroleum), gas oil diethanolamine scrubber off CAS 92045-15-3
- Gases (petroleum), gas oil hydrodesulfurization… CAS 92045-16-4
- Gases (petroleum), gas oil hydrodesulfurization purge CAS 92045-17-5
- Gases (petroleum), gas recovery plant depropanizer… CAS 68477-94-1
- Gases (petroleum), Girbotol unit feed CAS 68477-95-2
- Gases (petroleum), heavy distillate hydrotreater… CAS 68919-04-0
- Gases (petroleum), hydrocracking depropanizer off… CAS 68513-16-6
- Gases (petroleum), hydrocracking low-pressure separator CAS 68783-06-2
- Gases (petroleum), hydrogen absorber off CAS 68477-96-3
- Gases (petroleum), hydrogen-rich CAS 68477-97-4
- Gases (petroleum), hydrogenator effluent flash drum off CAS 92045-18-6
- Gases (petroleum), hydrotreated sour kerosine… CAS 68911-58-0
- Gases (petroleum), hydrotreated sour kerosine flash… CAS 68911-59-1
- Gases (petroleum), hydrotreater blend oil recycle… CAS 68477-98-5
- Gases (petroleum), isomerized naphtha fractionator… CAS 68477-99-6
- Gases (petroleum), light straight run gasoline… CAS 68919-05-1
- Gases (petroleum), light straight-run naphtha… CAS 68513-17-7
- Gases (petroleum), naphtha steam cracking… CAS 92045-19-7
- Gases (petroleum), naphtha unifiner desulfurization… CAS 68919-06-2
- Gases (petroleum), oil refinery gas distn. off CAS 68527-15-1
- Gases (petroleum), platformer products separator off CAS 68814-90-4
- Gases (petroleum), platformer stabilizer off, light… CAS 68919-07-3
- Gases (petroleum), preflash tower off, crude distn. CAS 68919-08-4
- Gases (petroleum), recycle, hydrogen-rich CAS 68478-00-2
- Gases (petroleum), refinery CAS 68814-67-5
- Gases (petroleum), refinery blend CAS 68783-07-3
- Gases (petroleum), reformer effluent high-pressure… CAS 68513-18-8
- Gases (petroleum), reformer effluent low-pressure… CAS 68513-19-9
- Gases (petroleum), reformer make-up, hydrogen-rich CAS 68478-01-3
- Gases (petroleum), reforming hydrotreater CAS 68478-02-4
- Gases (petroleum), reforming hydrotreater make-up… CAS 68478-04-6
- Gases (petroleum), reforming hydrotreater… CAS 68478-03-5
- Gases (petroleum), residue visbaking off CAS 92045-20-0
- Gases (petroleum), secondary absorber off, fluidized… CAS 68602-84-6
- Gases (petroleum), sponge absorber off, fluidized… CAS 68955-33-9
- Gases (petroleum), steam-cracker C3-rich CAS 92045-22-2
- Gases (petroleum), straight-run naphtha catalytic… CAS 68955-34-0
- Gases (petroleum), straight-run naphtha catalytic… CAS 68919-09-5
- Gases (petroleum), straight-run stabilizer off CAS 68919-10-8
- Gases (petroleum), tar stripper off CAS 68919-11-9
- Gases (petroleum), thermal cracking distn. CAS 68478-05-7
- Gases (petroleum), unifiner stripper off CAS 68919-12-0
- Hydrocarbons, C1-3 CAS 68527-16-2
- Hydrocarbons, C1-4 CAS 68514-31-8
- Hydrocarbons, C1-4, debutanizer fraction CAS 68527-19-5
- Hydrocarbons, C1-4, sweetened CAS 68514-36-3
- Hydrocarbons, C2-4 CAS 68606-25-7
- Hydrocarbons, C2-4, C3-rich CAS 68476-49-3
- Hydrocarbons, C3 CAS 68606-26-8
- Hydrocarbons, C3-4 CAS 68476-40-4
- Hydrocarbons, C3-4-rich, petroleum distillate CAS 68512-91-4
- Hydrocarbons, C4 CAS 87741-01-3
- Hydrocarbons, C4-5 CAS 68476-42-6
- Hydrocarbons, C4, 1,3-butadiene- and isobutene-free CAS 95465-89-7
- Hydrocarbons, C4, steam-cracker distillate CAS 92045-23-3
- Hydrogen CAS 1333-74-0
- Hydrogen Sulfide CAS 7783-06-4
- Methane CAS 74-82-8
- Methanethiol CAS 74-93-1
- Methyl vinyl ether CAS 107-25-5
- mono-methylamine [1] di-methylamine [2]… CAS 74-89-5
- oxalonitrile CAS 460-19-5
- Petroleum gases, liquefied CAS 68476-85-7
- Petroleum gases, liquefied, sweetened CAS 68476-86-8
- Petroleum gases, liquefied, sweetened, C4 fraction CAS 92045-80-2
- Petroleum products, refinery gases CAS 68607-11-4
- Phosphine CAS 7803-51-2
- propane CAS 74-98-6
- Propylene CAS 115-07-1
- Raffinates (petroleum), steam-cracked C4 fraction… CAS 97722-19-5
- Residues (petroleum), alkylation splitter, C4-rich CAS 68513-66-6
- Tail gas (petroleum), catalytic cracked clarified oil… CAS 68478-21-7
- Tail gas (petroleum), catalytic cracked distillate and… CAS 68307-98-2
- Tail gas (petroleum), catalytic cracked distillate and… CAS 68952-77-2
- Tail gas (petroleum), catalytic cracked naphtha… CAS 68478-22-8
- Tail gas (petroleum), catalytic cracker… CAS 68478-25-1
- Tail gas (petroleum), catalytic cracker, catalytic… CAS 68478-24-0
- Tail gas (petroleum), catalytic hydrodesulfurized… CAS 68952-79-4
- Tail gas (petroleum), catalytic polymn. naphtha… CAS 68307-99-3
- Tail gas (petroleum), catalytic reformed naphtha… CAS 68478-26-2
- Tail gas (petroleum), catalytic reformed naphtha… CAS 68308-00-9
- Tail gas (petroleum), catalytic reformed naphtha… CAS 68478-27-3
- Tail gas (petroleum), catalytic reformed naphtha… CAS 68478-28-4
- Tail gas (petroleum), cracked distillate hydrotreater… CAS 68478-29-5
- Tail gas (petroleum), cracked distillate hydrotreater… CAS 68308-01-0
- Tail gas (petroleum), gas oil catalytic cracking… CAS 68308-03-2
- Tail gas (petroleum), gas recovery plant CAS 68308-04-3
- Tail gas (petroleum), gas recovery plant deethanizer CAS 68308-05-4
- Tail gas (petroleum), hydrodesulfurized distillate and… CAS 68308-06-5
- Tail gas (petroleum), hydrodesulfurized straight-run… CAS 68478-30-8
- Tail gas (petroleum), hydrodesulfurized vacuum gas oil… CAS 68308-07-6
- Tail gas (petroleum), isomerized naphtha fractionation… CAS 68308-08-7
- Tail gas (petroleum), light straight-run naphtha… CAS 68308-09-8
- Tail gas (petroleum), propane-propylene alkylation… CAS 68308-11-2
- Tail gas (petroleum), saturate gas plant mixed stream… CAS 68478-32-0
- Tail gas (petroleum), saturate gas recovery plant… CAS 68478-33-1
- Tail gas (petroleum), straight-run distillate… CAS 68308-10-1
- Tail gas (petroleum), straight-run naphtha… CAS 68952-80-7
- Tail gas (petroleum), thermal cracked hydrocarbon… CAS 68952-82-9
- Tail gas (petroleum), thermal-cracked distillate, gas… CAS 68952-81-8
- Tail gas (petroleum), vacuum gas oil… CAS 68308-12-3
- Tail gas (petroleum), vacuum residues thermal cracker CAS 68478-34-2
- vinyl chloride CAS 75-01-4
Nothing matches that filter.
All hazard statements
The full list of H-codes with the jurisdiction switch lives on the hazard statements hub. For what to do about the hazard, see precautionary statements (P-codes).
Wording quoted from the regulation named above. Substance counts come from harmonised classifications in CLP Annex VI — the statements on a real product also depend on the supplier's own classification. Always check the supplier safety data sheet.