P503 · Precautionary statementRefer to manufacturer/supplier… for information on disposal/recovery/recycling.

Precautionary · DisposalPhysicalNot adopted: US, EU, Mexico

P503 is the GHS precautionary statement “Refer to manufacturer/supplier… for information on disposal/recovery/recycling”. UN GHS Annex 3 assigns it to Explosives (chapter 2.1), Category 1, 2A, 2B, 2C. The English wording is the same as UN GHS Rev.11 in Canada. Not adopted in US OSHA, EU CLP and Mexico. Canada’s official French text is “Se reporter au fabricant/fournisseur/… pour des informations concernant l’élimination/la récupération/le recyclage”. In the UN GHS Rev.11 label matrix it is used with 4 hazard statements (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

Refer to manufacturer/supplier… for information on disposal/recovery/recycling.

UN GHS Rev.11, Annex 3, Table A3.2.5, PDF p. 338

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)

Same as UN

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

Refer to manufacturer/supplier… for information on disposal/recovery/recycling.

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

Se reporter au fabricant/fournisseur/… pour des informations concernant l’élimination/la récupération/le recyclage.

GHS Rev.7 Annex 3 Table A3.2

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

Explosives (chapter 2.1) · Category 1, 2A, 2B, 2C

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.

H204 H209 H210 H211

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

Conditions for use

… Manufacturer/supplier or the competent authority to specify appropriate source of information in accordance with local/regional/national/international regulations as applicable

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

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 P503. 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.