Response · precautionary statement
P311 — Call a POISON CENTER or doctor.
Response statements describe what to do once exposure, a spill or a fire has happened. 55 substances with a harmonised EU classification carry this code.
01 · Wording
What P311 says
Call a POISON CENTER/doctor/… The wording is incomplete on purpose. Whom to call — a POISON CENTER, a doctor, or another emergency contact the supplier names.
Call a POISON CENTER or doctor. How it usually reads on a label. We show it separately rather than presenting a filled-in blank as the regulation's own text.
Response · 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.
02 · Legal status
Where P311 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 P311 |
|---|---|---|
| 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| UN GHS | Rev.11 (2025) UN GHS Rev.11, Annex 3 | withdrawn Deleted without a direct replacement. |
Currently in force under: EU CLP, US OSHA HazCom, US HazCom 2012. Sources: EU CLP · US OSHA HazCom · US HazCom 2012 · UN GHS
03 · On a label
P311 usually appears combined
CLP Annex IV defines combined statements as single label elements. P311 is a component of 2 of them — this is how you will actually see it printed.
| Code | Combined statement |
|---|---|
| P308+P311 | IF exposed or concerned: call a POISON CENTER or doctor. CLP verbatim: IF exposed or concerned: Call a POISON CENTER/doctor/… |
| P342+P311 | If experiencing respiratory symptoms: call a POISON CENTER or doctor. CLP verbatim: If experiencing respiratory symptoms: Call a POISON CENTER/doctor/… |
04 · Substances
Substances carrying P311
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, 6 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.
- (1,3,4,5,6,7-hexahydro-1,3-dioxo-2H-isoindol-2-yl)methyl (1R-trans)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate CAS 1166-46-7
- (1S,3S,5R,6R)-(4-nitrophenylmethyl)-1-dioxo-6-phenylacetamido-penam-3-carboxylate CAS 54275-93-3
- (1S,4R,6R,7R)-(4-nitrophenylmethyl)3-methylene-1-oxo-7-phenylacetamido-cepham-4-carboxylateido-penam-3-carboxylate CAS 76109-32-5
- (RS)-4-[1-(2,3-dimethylphenyl)ethyl]-1H-imidazole;; medetomidine CAS 86347-14-0
- 2-(isocyanatosulfonylmethyl)benzoic acid methyl ester; (alt.):methyl 2-(isocyanatosulfonylmethyl)benzoate CAS 83056-32-0
- 2,2,4-trimethylhexamethylene-1,6-di-isocyanate [1]; 2,4,4-trimethylhexamethylene-1,6-di-isocyanate [2] CAS 16938-22-0[1]15646-9
- 2,3,5,6-tetrafluoro-4-(methoxymethyl)benzyl (1R,3R)-2,2-dimethyl-3-[(1Z)-prop-1-en-1-yl] cyclopropanecarboxylate;; epsilon-metofluthrin CAS 240494-71-7
- 2,3,5,6-tetrafluoro-4-(methoxymethyl)benzyl (Z)-(1R,3R)-3-(2-cyanoprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate;; epsilon-momfluorothrin CAS 1065124-65-3
- 3-(2-chloroethyl)-6,7,8,9-tetra-hydro-2-methyl-4H-pyrido[1,2-a] pyrimidin-4-one monohydrochloride CAS 93076-03-0
- 4-chlorophenylisocyanate CAS 104-12-1
- 4-isocyanatosulphonyltoluene; tosyl isocyanate CAS 4083-64-1
- 4,4'-diaminodiphenylmethane; 4,4'-methylenedianiline CAS 101-77-9
- 8,9-dinorborn-5-ene-2,3-dicarboxylic anhydride CAS 123748-85-6
- acequinocyl (ISO); 3-dodecyl-1,4-dioxo-1,4-dihydronaphthalen-2-yl acetate CAS 57960-19-7
- amylase, α- CAS 9000-90-2
- amylases with the exception of those specified elsewhere in this Annex Index No 647-016-00-X
- azamethiphos (ISO); S-[(6-chloro-2-oxooxazolo[4,5-b]pyridin-3(2H)-yl)methyl] O,O-dimethyl thiophosphate CAS 35575-96-3
- beta-cyfluthrin (ISO);; reaction mass of rel-(R)-cyano(4-fluoro-3-phenoxyphenyl)methyl(1S,3S)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate and rel-(R)-cyano(4-fluoro-3-phenoxyphenyl)methyl(1S,3R)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate CAS 1820573-27-0
- bromelain, juice CAS 9001-00-7
- butanone oxime; ethyl methyl ketoxime; ethyl methyl ketone oxime CAS 96-29-7
- 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 elsewhere in this Annex Index No 647-004-00-4
- chymotrypsin CAS 9004-07-3
- clothianidin (ISO); (E)-1-(2-chloro–1,3-thiazol-5-ylmethyl)-3-methyl-2-nitroguanidine CAS 210880-92-5
- cyanofenphos (ISO); O-4-cyanophenyl O-ethyl phenylphosphonothioate CAS 13067-93-1
- cyfluthrin (ISO); α-cyano-4-fluoro-3-phenoxybenzyl-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate CAS 68359-37-5
- dimethyl disulphide CAS 624-92-0
- dioxabenzofos (ISO); 2-methoxy-4H-1,3,2-benzodioxaphosphorin 2-sulphide CAS 3811-49-2
- emamectin benzoate (ISO); (4"R)-4"-deoxy-4"-(methylamino) avermectin B1 benzoate CAS 155569-91-8
- esfenvalerate (ISO);; (S)-α-cyano- 3-phenoxybenzyl-(S)- 2-(4-chlorophenyl)- 3-methylbutyrate CAS 66230-04-4
- ficin CAS 9001-33-6
- glucosidase, β- CAS 9001-22-3
- imiprothrin (ISO); reaction mass of: [2,4-dioxo-(2-propyn-1-yl)imidazolidin-3-yl]methyl(1R)-cis-chrysanthemate; [2,4-dioxo-(2-propyn-1-yl)imidazolidin-3-yl]methyl(1R)-trans-chrysanthemate CAS 72963-72-5
- laccase CAS 80498-15-3
- leptophos (ISO); O-4-bromo-2,5-dichlorophenyl O-methyl phenylphosphorothioate CAS 21609-90-5
- methanol CAS 67-56-1
- mipafox (ISO); N,N'- di-isopropylphosphorodiamidic fluoride CAS 371-86-8
- papain CAS 9001-73-4
- pepsin A CAS 9001-75-6
- phosmet (ISO);; S-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl] O,O-di-methyl phosphorodithioate;; O,O-dimethyl-S-phthalimido-methyl phosphorodithioate CAS 732-11-6
- proteases with the exception of those specified elsewhere in this Annex Index No 647-014-00-9
- proteinase, microbial neutral CAS 9068-59-1
- reaction mass of: succinic acidmonopersuccinic aciddipersuccinic acidmonomethyl ester of succinic acidmonomethyl ester of persuccinic aciddimethyl succinate glutaric acidmonoperglutaric aciddiperglutaric acidmonomethyl ester of glutaric acidmonomethyl ester of perglutaric aciddimethyl glutarate adipic acidmonoperadipic aciddiperadipic acidmonomethyl ester of adipic acidmonomethyl ester of peradipic aciddimethyl adipatehydrogen peroxidemethanolwater Index No 607-613-00-8
- reaction product of: (2-hydroxy-4-(3-propenoxy)benzophenone and triethoxysilane) with (hydrolysis product of silica and methyltrimethoxysilane) Index No 014-022-00-3
- rennin CAS 9001-98-3
- resorcinol; 1,3-benzenediol CAS 108-46-3
- subtilisin CAS 9014-01-1
- tetramethrin (ISO);; (1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-yl)methyl 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate CAS 7696-12-0
- tetrasodium 5-(4,6-dichloro-5-cyanopyrimidin-2-ylamino)-4-hydroxy-2,3-azodinaphthalene-1,2,5,7-disulphonate Index No 016-036-00-5
- tosylchloramide sodium CAS 127-65-1
- transfluthrin (ISO); 2,3,5,6-tetrafluorobenzyl (1R,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate CAS 118712-89-3
- tricresyl phosphate (o-o-o-, o-o-m-, o-o-p-, o-m-m-, o-m-p-, o-p-p-); tritolyl phosphate (o-o-o-, o-o-m-, o-o-p-, o-m-m-, o-m-p-, o-p-p-) CAS 78-30-8
- trypsin CAS 9002-07-7
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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.