P342+P316 · Precautionary statementIf experiencing respiratory symptoms: Get emergency medical help immediately.

Precautionary · ResponseHealthCombinedNot adopted: US, EU, Canada, Mexico

P342+P316 is the GHS precautionary statement “If experiencing respiratory symptoms: Get emergency medical help immediately”. UN GHS Annex 3 assigns it to Respiratory sensitization (chapter 3.4), Category 1, 1A, 1B. Not adopted in US OSHA, EU CLP, Canada and Mexico. In the UN GHS Rev.11 label matrix it is used with 1 hazard statement (UN only).

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

Heading text: UN GHS Rev.11 Annex 3. Wording can differ by jurisdiction; see the table below.

Wording by jurisdiction

UN GHS Rev.11

Same as UN

GHS Rev.11 (2025), Annex 3

If experiencing respiratory symptoms: Get emergency medical help immediately.

UN GHS Rev.11, Annex 3, Table A3.2.3, PDF p. 330

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)

Not adopted

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

Not in GHS Rev.7 (the edition the HPR incorporates).

Canada (FR)

Not adopted

WHMIS_2022 · SGH Rév.7, texte officiel

Not in GHS Rev.7 (the edition the HPR incorporates).

Mexico (ES)

Not adopted

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

Not listed in NOM-018-STPS-2015 Appendix C/D.

Hazard classes and categories

Respiratory sensitization (chapter 3.4) · Category 1, 1A, 1B

UN GHS Rev.11 Annex 3, sections 1 and 2

H statements it is used with in the UN GHS Rev.11 label matrix only

UN GHS Rev.11 only. EU CLP, US OSHA, Canada (GHS Rev.7) and Mexico assign their own P statements; check the regulation for your market.

H334

UN GHS Rev.11 Annex 3, section 3. Listed for at least one category that uses each H statement.

Conditions for use

Competent authority or manufacturer/supplier may add, “Call” followed by the appropriate emergency telephone number, or the appropriate emergency medical help provider, for example, a poison centre, emergency centre or doctor.

Quoted as published in UN GHS Rev.11 Annex 3, section 2. List markers are shown as bullets.

Related codes

P342 P316

Change in UN GHS Rev.11

No change to the wording or the hazard classes in Annex 3 compared with Rev.10.

Sources

Each cell in the table names the official table and page for P342+P316. 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.