Prevention · precautionary statement
P284 — In case of inadequate ventilation, wear respiratory protection.
Prevention statements describe how to keep the harm from happening at all. 27 substances with a harmonised EU classification carry this code.
01 · Wording
What P284 says
[In case of inadequate ventilation] wear respiratory protection. The wording is incomplete on purpose. The square brackets mark a conditional part: it is printed only when ventilation really is inadequate.
In case of inadequate ventilation, wear respiratory protection. How it usually reads on a label. We show it separately rather than presenting a filled-in blank as the regulation's own text.
Prevention · GHS revision 9
Reading the official wording. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies. · A slash offers a choice, as in POISON CENTER/doctor.
Does your label need P284? That depends on the hazard classes of your product, on whether it goes to the public or to professionals, and on what else is already on the label — Annex IV column 5 lets one statement remove another. Work it out from a classification →
02 · Languages
P284 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 IV, and are the text to print.
| Language | Official wording of P284 |
|---|---|
| BG български Bulgarian | [При недостатъчна вентилация] носете средства за защита на дихателните пътища. |
| ES español Spanish | [En caso de ventilación insuficiente,] llevar equipo de protección respiratoria. |
| CS čeština Czech | [V případě nedostatečného větrání] používejte vybavení pro ochranu dýchacích cest. |
| DA dansk Danish | [I tilfælde af utilstrækkelig ventilation], anvend åndedrætsværn. |
| DE Deutsch German | [Bei unzureichender Belüftung] Atemschutz tragen. |
| ET eesti Estonian | [Ebapiisava ventilatsiooni korral] kanda hingamisteede kaitsevahendit. |
| EL ελληνικά Greek | [Σε περίπτωση ανεπαρκούς αερισμού] χρησιμοποιείστε μέσα ατομικής προστασίας της αναπνοής. |
| EN English English | [In case of inadequate ventilation] wear respiratory protection. |
| FR français French | [Lorsque la ventilation du local est insuffisante] porter un équipement de protection respiratoire. |
| GA Gaeilge Irish | [Mura leor an aeráil] caith cosaint riospráide. |
| HR hrvatski Croatian | [U slučaju nedovoljne ventilacije] nositi sredstva za zaštitu dišnog sustava. |
| IT italiano Italian | [Quando la ventilazione del locale è insufficiente] indossare un apparecchio di protezione respiratoria. |
| LV latviešu Latvian | [Neatbilstošas ventilācijas gadījumā] lietot elpošanas orgānu aizsargierīces. |
| LT lietuvių Lithuanian | [Esant nepakankamam vėdinimui] naudoti kvėpavimo takų apsaugos priemones. |
| HU magyar Hungarian | [Nem megfelelő szellőzés esetén] légzésvédelem kötelező. |
| MT Malti Maltese | [F’każ ta’ ventilazzjoni inadegwata] ilbes protezzjoni respiratorja. |
| NL Nederlands Dutch | [Bij ontoereikende ventilatie] adembescherming dragen. |
| PL polski Polish | [W przypadku nieodpowiedniej wentylacji] stosować indywidualne środki ochrony dróg oddechowych. |
| PT português Portuguese | [Em caso de ventilação inadequada] usar proteção respiratória. |
| RO română Romanian | [În cazul în care ventilarea este necorespunzătoare] purtați echipament de protecție respiratorie. |
| SK slovenčina Slovak | [V prípade nedostatočného vetrania] používajte ochranu dýchacích ciest. |
| SL slovenščina Slovenian | [Ob nezadostnem prezračevanju] nositi opremo za zaščito dihal. |
| FI suomi Finnish | Käytä hengityksensuojainta [jos ilmanvaihto on riittämätön]. |
| SV svenska Swedish | [Vid otillräcklig ventilation], använd andningsskydd. |
Source: CELEX:02008R1272-20260501, Annex IV. © 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 P284 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 P284 |
|---|---|---|
| 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 P284
Every entry whose harmonised CLP Annex VI classification includes this precautionary statement. Substances with a reference page here open on this site; the rest open on ghssymbols.com. Of these, 4 are group entries such as “beryllium compounds” or “salts of hydrazine” — Annex VI gives them no CAS number, so they are listed by Index No and have no page of their own.
- (1S,3S,5R,6R)-(4-nitrophenylmethyl)-1-dioxo-6-phenylace… CAS 54275-93-3
- (1S,4R,6R,7R)-(4-nitrophenylmethyl)3-methylene-1-oxo-7… CAS 76109-32-5
- 2,2,4-trimethylhexamethylene-1,6-di-isocyanate [1]… CAS 16938-22-0
- 4-Chlorophenyl Isocyanate CAS 104-12-1
- 4-isocyanatosulphonyltoluene CAS 4083-64-1
- 8,9-dinorborn-5-ene-2,3-dicarboxylic anhydride CAS 123748-85-6
- amylase, α- CAS 9000-90-2
- amylases with the exception of those specified… Index No 647-016-00-X
- Benzoic acid, 2-[(isocyanatosulfonyl)methyl]-, methyl… CAS 83056-32-0
- bromelain, juice CAS 9001-00-7
- C,C'-azodi(formamide) CAS 123-77-3
- cellobiohydrolase, exo- CAS 37329-65-0
- Cellulase CAS 9012-54-8
- cellulases with the exception of those specified… Index No 647-004-00-4
- chymotrypsin CAS 9004-07-3
- ficin CAS 9001-33-6
- glucosidase, β- CAS 9001-22-3
- Laccase CAS 80498-15-3
- papain CAS 9001-73-4
- pepsin A CAS 9001-75-6
- proteases with the exception of those specified… Index No 647-014-00-9
- proteinase, microbial neutral CAS 9068-59-1
- rennin CAS 9001-98-3
- subtilisin CAS 9014-01-1
- tetrasodium 5-(4,6-dichloro-5-cyanopyrimidin-2-ylamino)… Index No 016-036-00-5
- tosylchloramide sodium CAS 127-65-1
- trypsin CAS 9002-07-7
Nothing matches that filter.
All precautionary statements
The full list of P-codes with the jurisdiction switch lives on the precautionary statements hub. For the hazard side, see hazard statements (H-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.