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

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Health hazard · Germ cell mutagenicity

H341 — Suspected of causing genetic defects

Health hazard statements describe what the substance does to a person exposed to it. 153 substances with a harmonised EU classification carry this code.

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

01 · Wording

What H341 says

Official

Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. The wording is incomplete on purpose. The route of exposure — stated only where it is conclusively proven that no other route of exposure causes the hazard.

Typical

Suspected of causing genetic defects. How it usually reads on a label and on a safety data sheet. We show it separately rather than presenting a filled-in blank as the regulation's own text.

Source

CLP Annex III · Health hazards

Classification
GHS08 pictogram — health hazard

Germ cell mutagenicity GHS chapter 3.5

Category 2 · pictogram GHS08 (health hazard) · signal word Warning

Reading the official wording. <angle brackets> mark a blank the supplier fills in — not a truncated sentence.· UN GHS prints the same blanks in round brackets, CLP in angle ones.· P-codes use a different notation — an ellipsis and square brackets.

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

H341 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 H341
BG български Bulgarian Предполага се, че причинява генетични дефекти < да се посочи пътят на експозицията, ако е доказано убедително, че няма друг път на експозиция, който води до същата опасност >.
ES español Spanish Se sospecha que provoca defectos genéticos <Indíquese la vía de exposición si se ha demostrado concluyentemente que el peligro no se produce por ninguna otra vía>.
CS čeština Czech Podezření na genetické poškození <uveďte cestu expozice, je-li přesvědčivě prokázáno, že ostatní cesty expozice nejsou nebezpečné>.
DA dansk Danish Mistænkt for at forårsage genetiske defekter <angiv eksponeringsvej, hvis det er endeligt påvist, at faren ikke kan frembringes ad nogen anden eksponeringsvej>.
DE Deutsch German Kann vermutlich genetische Defekte verursachen <Expositionsweg angeben, sofern schlüssig belegt ist, dass diese Gefahr bei keinem anderen Expositionsweg besteht>.
ET eesti Estonian Arvatavasti põhjustab geneetilisi defekte <märkida kokkupuuteviis, kui on veenvalt tõestatud, et muud kokkupuuteviisid ei ole ohtlikud>.
EL ελληνικά Greek Ύποπτο για πρόκληση γενετικών ελαττωμάτων <αναφέρεται η οδός έκθεσης αν έχει αποδειχθεί αδιαμφισβήτητα ότι δεν υπάρχει κίνδυνος από τις άλλες οδούς έκθεσης>.
EN English English Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
FR français French Susceptible d'induire des anomalies génétiques <indiquer la voie d'exposition s'il est formellement prouvé qu'aucune autre voie d'exposition ne conduit au même danger>.
GA Gaeilge Irish Ceaptar go bhféadfadh sé a bheith ina chúis le héalanga géiniteacha <tabhair an bealach nochta má tá sé cruthaithe go cinntitheach nach bealach nochta ar bith eile is cúis leis an nguais>.
HR hrvatski Croatian Sumnja na moguća genetska oštećenja <navesti način izloženosti ako je nedvojbeno dokazano da niti jedan drugi način izloženosti ne uzrokuje takvu opasnost>.
IT italiano Italian Sospettato di provocare alterazioni genetiche <indicare la via di esposizione se è accertato che nessun'altra via di esposizione comporta il medesimo pericolo>.
LV latviešu Latvian Ir aizdomas, ka var izraisīt ģenētiskus bojājumus <norādīt iedarbības ceļu, ja ir nepārprotami pierādīts, ka citi iedarbības ceļi nerada bīstamību>.
LT lietuvių Lithuanian Įtariama, kad gali sukelti genetinius defektus <nurodyti veikimo būdą, jeigu įtikinamai nustatyta, kad kiti veikimo būdai nepavojingi>.
HU magyar Hungarian Feltehetően genetikai károsodást okoz < meg kell adni az expozíciós útvonalat, ha meggyőzően bizonyított, hogy más expozíciós útvonal nem okozza a veszélyt >.
MT Malti Maltese Suspettat li jikkawża difetti ġenetiċi <semmi l-mod ta' espożizzjoni jekk ikun pruvat b'mod konklużiv li l-ebda mod ta' espożizzjoni ieħor ma jikkawża l-periklu>.
NL Nederlands Dutch Verdacht van het veroorzaken van genetische schade <blootstellingsroute vermelden indien afdoende bewezen is dat het gevaar bij andere blootstellingsroutes niet aanwezig is>.
PL polski Polish Podejrzewa się, że powoduje wady genetyczne <podać drogę narażenia, jeżeli definitywnie udowodniono, że inna droga narażenia nie powoduje zagrożenia>.
PT português Portuguese Suspeito de provocar anomalias genéticas <indicar a via de exposição se existirem provas concludentes de que o perigo não decorre de nenhuma outra via de exposição>.
RO română Romanian Susceptibil de a provoca anomalii genetice < indicați calea de expunere, dacă există probe concludente că nicio altă cale de expunere nu provoacă acest pericol>.
SK slovenčina Slovak Podozrenie, že spôsobuje genetické poškodenie <uveďte spôsob expozície, ak sa presvedčivo preukáže, že iné spôsoby expozície nevyvolávajú nebezpečenstvo>.
SL slovenščina Slovenian Sum povzročitve genetskih okvar <navesti način izpostavljenosti, če je prepričljivo dokazano, da noben drug način izpostavljenosti ne povzroča takšne nevarnosti>.
FI suomi Finnish Epäillään aiheuttavan perimävaurioita <mainitaan altistumisreitti, jos on kiistatta osoitettu, että vaara ei voi aiheutua muiden altistumisreittien kautta>.
SV svenska Swedish Misstänks kunna orsaka genetiska defekter <ange exponeringsväg om det är definitivt bevisat att faran inte kan orsakas av några andra exponeringsvägar>.

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 H341 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 H341
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 H341

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, 8 are group entries 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.

153 of 153 shown

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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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