EU-specific statement
EUH031 — Contact with acids liberates toxic gas
EUH statements are supplementary European elements with no UN GHS equivalent — they appear on EU labels only. 21 substances with a harmonised EU classification carry this code.
01 · Wording
What EUH031 says
Contact with acids liberates toxic gas.
CLP Annex III · EU-specific statements
02 · Languages
EUH031 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 EUH031 |
|---|---|
| BG български Bulgarian | При контакт с киселини се отделя токсичен газ. |
| ES español Spanish | En contacto con ácidos libera gases tóxicos. |
| CS čeština Czech | Uvolňuje toxický plyn při styku s kyselinami. |
| DA dansk Danish | Udvikler giftig gas ved kontakt med syre. |
| DE Deutsch German | Entwickelt bei Berührung mit Säure giftige Gase. |
| ET eesti Estonian | Kokkupuutel hapetega eraldub mürgine gaas. |
| EL ελληνικά Greek | Σε επαφή με οξέα ελευθερώνονται τοξικά αέρια. |
| EN English English | Contact with acids liberates toxic gas. |
| FR français French | Au contact d'un acide, dégage un gaz toxique. |
| GA Gaeilge Irish | I dteagmháil le haigéid scaoiltear gás tocsaineach. |
| HR hrvatski Croatian | U dodiru s kiselinama oslobađa otrovni plin. |
| IT italiano Italian | A contatto con acidi libera gas tossici. |
| LV latviešu Latvian | Saskaroties ar skābēm, izdala toksiskas gāzes. |
| LT lietuvių Lithuanian | Kontaktuodama su rūgštimis išskiria toksiškas dujas. |
| HU magyar Hungarian | Savval érintkezve mérgező gázok képződnek. |
| MT Malti Maltese | Jitfa' gass tossiku meta jmiss l-aċidi. |
| NL Nederlands Dutch | Vormt giftig gas in contact met zuren. |
| PL polski Polish | W kontakcie z kwasami uwalnia toksyczne gazy. |
| PT português Portuguese | Em contacto com ácidos liberta gases tóxicos. |
| RO română Romanian | În contact cu acizi, degajă un gaz toxic. |
| SK slovenčina Slovak | Pri kontakte s kyselinami uvoľňuje toxický plyn. |
| SL slovenščina Slovenian | V stiku s kislinami se sprošča strupen plin. |
| FI suomi Finnish | Kehittää myrkyllistä kaasua hapon kanssa. |
| SV svenska Swedish | Utvecklar giftig gas vid kontakt med syra. |
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 EUH031 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 EUH031 |
|---|---|---|
| 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) | not in this system |
| US HazCom 2012 | legacy · GHS Rev.3 UN GHS Rev.3, Annex 3 | not in this system |
| UN GHS | Rev.11 (2025) UN GHS Rev.11, Annex 3 | not in this system |
Currently in force under: EU CLP. Sources: EU CLP · US OSHA HazCom · US HazCom 2012 · UN GHS
04 · Substances
Substances carrying EUH031
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.
- ammonium polysulphides CAS 9080-17-5
- barium polysulphides CAS 50864-67-0
- Barium sulfide CAS 21109-95-5
- calcium hypochlorite CAS 7778-54-3
- calcium polysulphides CAS 1344-81-6
- Calcium Sulfide CAS 20548-54-3
- di(benzothiazol-2-yl) disulphide CAS 120-78-5
- dichloro-1,3,5-triazinetrione CAS 2782-57-2
- Metam-sodium CAS 137-42-8
- Potassium polysulfide CAS 37199-66-9
- Potassium Sulfide CAS 1312-73-8
- Sodium Dithionite CAS 7775-14-6
- sodium hydrogensulphite … % CAS 7631-90-5
- sodium hypochlorite CAS 7681-52-9
- sodium metabisulphite CAS 7681-57-4
- Sodium polysulfide CAS 1344-08-7
- Sodium Selenite CAS 10102-18-8
- symclosene CAS 87-90-1
- tosylchloramide sodium CAS 127-65-1
- troclosene potassium [1] troclosene sodium [2] CAS 2244-21-5
- troclosene sodium, dihydrate CAS 51580-86-0
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.