Physical hazard · Oxidising liquids · Oxidising solids
H272 — May intensify fire; oxidiser
Physical hazard statements describe what the substance itself can do — explode, ignite, react, corrode metal. 19 substances with a harmonised EU classification carry this code.
01 · Wording
What H272 says
May intensify fire; oxidiser.
CLP Annex III · Physical hazards
Oxidising liquids · Oxidising solids GHS chapter 2.13
Categories 2, 3 · pictogram GHS03 (flame over circle) · signal word Danger or Warning
By category: 2 — GHS03, Danger; 3 — GHS03, Warning
Unchanged since 2009.
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
H272 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 H272 |
|---|---|
| BG български Bulgarian | Може да усили пожара; окислител. |
| ES español Spanish | Puede agravar un incendio; comburente. |
| CS čeština Czech | Může zesílit požár; oxidant. |
| DA dansk Danish | Kan forstærke brand, brandnærende. |
| DE Deutsch German | Kann Brand verstärken; Oxidationsmittel. |
| ET eesti Estonian | Võib soodustada põlemist; oksüdeerija. |
| EL ελληνικά Greek | Μπορεί να αναζωπυρώσει την πυρκαγιά· οξειδωτικό. |
| EN English English | May intensify fire; oxidiser. |
| FR français French | Peut aggraver un incendie; comburant. |
| GA Gaeilge Irish | D'fhéadfadh sé cur le tine; ocsaídeoir. |
| HR hrvatski Croatian | Može pojačati požar; oksidans. |
| IT italiano Italian | Può aggravare un incendio; comburente. |
| LV latviešu Latvian | Var pastiprināt degšanu; oksidētājs. |
| LT lietuvių Lithuanian | Gali padidinti gaisrą, oksidatorius. |
| HU magyar Hungarian | Fokozhatja a tűz intenzitását; oxidáló hatású. |
| MT Malti Maltese | Jista' jżid in-nar; ossidant. |
| NL Nederlands Dutch | Kan brand bevorderen; oxiderend. |
| PL polski Polish | Może intensyfikować pożar; utleniacz. |
| PT português Portuguese | Pode agravar incêndios; comburente. |
| RO română Romanian | Poate agrava un incendiu; oxidant. |
| SK slovenčina Slovak | Môže prispieť k rozvoju požiaru; oxidačné činidlo. |
| SL slovenščina Slovenian | Lahko okrepi požar; oksidativna snov. |
| FI suomi Finnish | Voi edistää tulipaloa; hapettava. |
| SV svenska Swedish | Kan intensifiera brand. Oxiderande. |
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 H272 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 H272 |
|---|---|---|
| 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 H272
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. Of these, 1 is a group entry such as “salts of picric acid” or “beryllium compounds” — Annex VI gives them no CAS number, so they are listed by Index No and have no page of their own.
- 2-hydroxyethylammonium perbromide Index No 035-004-00-1
- Ammonium dichromate CAS 7789-09-5
- Barium peroxide CAS 1304-29-6
- calcium hypochlorite CAS 7778-54-3
- diammonium peroxodisulphate CAS 7727-54-0
- dichloro-1,3,5-triazinetrione CAS 2782-57-2
- dipotassium peroxodisulphate CAS 7727-21-1
- nickel dinitrate [1] nitric acid, nickel salt [2] CAS 13138-45-9
- nitric acid CAS 7697-37-2
- perboric acid, sodium salt [1] perboric acid, sodium… CAS 11138-47-9
- potassium dichromate CAS 7778-50-9
- Potassium nitrite CAS 7758-09-0
- potassium permanganate CAS 7722-64-7
- silver nitrate CAS 7761-88-8
- Sodium Dichromate CAS 10588-01-9
- Sodium Nitrite CAS 7632-00-0
- sodium peroxometaborate CAS 7632-04-4
- symclosene CAS 87-90-1
- troclosene potassium [1] troclosene sodium [2] CAS 2244-21-5
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.