P304+P312 · Precautionary statementIF INHALED: Call a POISON CENTER/doctor/…if you feel unwell.

Precautionary · ResponseCombinedRemoved in UN GHS Rev.8

Removed in UN GHS Rev.8. Still listed in Canada and Mexico. P304+P312 is the GHS precautionary statement “IF INHALED: Call a POISON CENTER/doctor/…if you feel unwell”. Canada’s official French text is “EN CAS D'INHALATION: Appeler un CENTRE ANTIPOISON/un médecin/…en cas de malaise” and Mexico’s Spanish text is “En caso de inhalación, llamar a un centro de toxicología o médico /… si la persona se encuentra mal”.

Maintained by Valenc. Data checked 2026-10-20.

Heading text: Canada HPR. Wording can differ by jurisdiction; see the table below.

Wording by jurisdiction

UN GHS Rev.11

Deleted

GHS Rev.11 (2025), Annex 3

Removed in UN GHS Rev.8 (ST/SG/AC.10/46/Add.3, Annex III), where this combination was renumbered to its P316/P317 form. Not in UN GHS Rev.11 Annex 3. Still in GHS Rev.7 Annex 3, Table A3.2.3.

US OSHA HCS

Not adopted

HCS 2024 · primarily GHS Rev.7, some Rev.8

No matching wording in OSHA Appendix C.

EU CLP

Not adopted

EU_CLP_2025 · consolidated 1 Jul 2026

Not listed in EU CLP Annex III or IV.

Canada (EN)

Adopted

WHMIS_2022 · GHS Rev.7 (Rev.8 for chemicals under pressure)

IF INHALED: Call a POISON CENTER/doctor/…if you feel unwell.

GHS Rev.7 Annex 3 Table A3.2

In GHS Rev.7 this statement is only assigned to classes or categories that the HPR does not adopt.

Canada (FR)

Adopted

WHMIS_2022 · SGH Rév.7, texte officiel

EN CAS D'INHALATION: Appeler un CENTRE ANTIPOISON/un médecin/…en cas de malaise.

GHS Rev.7 Annex 3 Table A3.2

Mexico (ES)

Adopted

NOM-018-STPS-2015 · GHS 5th revised edition

En caso de inhalación, llamar a un centro de toxicología o médico /… si la persona se encuentra mal

NOM-018-STPS-2015, DOF 9 October 2015, Apéndice D, Tabla D.1, PDF p. 37

Related codes

P304 P312

Change in UN GHS Rev.11

No change in Rev.11. Removed in UN GHS Rev.8 (ST/SG/AC.10/46/Add.3, Annex III), where this combination was renumbered to its P316/P317 form. Not in UN GHS Rev.11 Annex 3. Still in GHS Rev.7 Annex 3, Table A3.2.3. Some jurisdictions still use it (see the table above).

Notes

Removed in UN GHS Rev.8. Still listed in: Canada (GHS Rev.7), Mexico (NOM-018).

Sources

Each cell in the table names the official table and page for P304+P312. Full citations, links and revision notes for UN GHS Rev.11, US OSHA, EU CLP, Canada and Mexico: Sources and revision notes.

These are regulatory phrases for labels and safety data sheets. Check them against the official source for your jurisdiction before use.