Provenance

Reference data from EU CLP Annex VI and published regulations — verify against your supplier's SDS before use.

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Health hazard · Aspiration hazard

H304 — May be fatal if swallowed and enters airways

Health hazard statements describe what the substance does to a person exposed to it. 201 substances with a harmonised EU classification carry this code.

EU CLP: currentUS OSHA HazCom: currentUS HazCom 2012: currentUN GHS: current

01 · Wording

What H304 says

Official

May be fatal if swallowed and enters airways.

Source

CLP Annex III · Health hazards

Classification
GHS08 pictogram — health hazard

Aspiration hazard GHS chapter 3.10

Category 1 · pictogram GHS08 (health hazard) · 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

H304 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.

LanguageOfficial wording of H304
BG български Bulgarian Може да бъде смъртоносен при поглъщане и навлизане в дихателните пътища.
ES español Spanish Puede ser mortal en caso de ingestión y penetración en las vías respiratorias.
CS čeština Czech Při požití a vniknutí do dýchacích cest může způsobit smrt.
DA dansk Danish Kan være livsfarligt, hvis det indtages og kommer i luftvejene.
DE Deutsch German Kann bei Verschlucken und Eindringen in die Atemwege tödlich sein.
ET eesti Estonian Allaneelamisel või hingamisteedesse sattumisel võib olla surmav.
EL ελληνικά Greek Μπορεί να προκαλέσει θάνατο σε περίπτωση κατάποσης και διείσδυσης στις αναπνευστικές οδούς.
EN English English May be fatal if swallowed and enters airways.
FR français French Peut être mortel en cas d'ingestion et de pénétration dans les voies respiratoires.
GA Gaeilge Irish D'fhéadfadh sé a bheith marfach má shlogtar é agus má théann sé isteach sna haerbhealaí.
HR hrvatski Croatian Može biti smrtonosno ako se proguta i uđe u dišni sustav.
IT italiano Italian Può essere letale in caso di ingestione e di penetrazione nelle vie respiratorie.
LV latviešu Latvian Var izraisīt nāvi, ja norij vai iekļūst elpceļos.
LT lietuvių Lithuanian Prarijus ir patekus į kvėpavimo takus, gali sukelti mirtį.
HU magyar Hungarian Lenyelve és a légutakba kerülve halálos lehet.
MT Malti Maltese Jista’ jkun fatali jekk jinbela’ u jidħol fil-pajpijiet tan-nifs.
NL Nederlands Dutch Kan dodelijk zijn als de stof bij inslikken in de luchtwegen terechtkomt.
PL polski Polish Połknięcie i dostanie się przez drogi oddechowe może grozić śmiercią.
PT português Portuguese Pode ser mortal por ingestão e penetração nas vias respiratórias.
RO română Romanian Poate fi mortal în caz de înghițire și de pătrundere în căile respiratorii.
SK slovenčina Slovak Môže byť smrteľný po požití a vniknutí do dýchacích ciest.
SL slovenščina Slovenian Pri zaužitju in vstopu v dihalne poti je lahko smrtno.
FI suomi Finnish Voi olla tappavaa nieltynä ja joutuessaan hengitysteihin.
SV svenska Swedish Kan vara dödligt vid förtäring om det kommer ner i luftvägarna.

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 H304 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.

JurisdictionBasisStatus of H304
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 H304

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.

201 of 201 shown

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.

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