P323 · Precautionary statementSpecific treatment (see information on the safety data sheet).

Precautionary · ResponseHealthNew in Rev.11Not adopted: US, EU, Canada, Mexico

P323 is the GHS precautionary statement “Specific treatment (see information on the safety data sheet)”. UN GHS Annex 3 assigns it to 7 hazard classes. Not adopted in US OSHA, EU CLP, Canada and Mexico. In the UN GHS Rev.11 label matrix it is used with 7 hazard statements (UN only). New in UN GHS Rev.11.

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

New in Rev.11

GHS Rev.11 (2025), Annex 3

Specific treatment (see information on the safety data sheet).

UN GHS Rev.11, Annex 3, Table A3.2.3, PDF p. 324

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

Acute toxicity, oral (chapter 3.1) · Category 4
Acute toxicity, dermal (chapter 3.1) · Category 4
Acute toxicity, inhalation (chapter 3.1) · Category 4
Skin corrosion (chapter 3.2) · Category 1, 1A, 1B, 1C
Skin irritation (chapter 3.2) · Category 2
Skin sensitization (chapter 3.4) · Category 1, 1A, 1B
Specific target organ toxicity, single exposure (chapter 3.8) · Category 1

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.

H302 H312 H314 H315 H317 H332 H370

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

Conditions for use

Manufacturer/supplier to reference on the safety data sheet detailed instructions, including any training requirements, to administer an antidote or other specific treatment. - may be omitted if P321 or P322 is given on the label.

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

Change in UN GHS Rev.11

New in UN GHS Rev.11 (not in Rev.10).

Sources

Each cell in the table names the official table and page for P323. 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.