P244 · Precautionary statementKeep valves and fittings free from oil and grease.

Precautionary · PreventionPhysical

P244 is the GHS precautionary statement “Keep valves and fittings free from oil and grease”. UN GHS Annex 3 assigns it to Oxidizing gases (chapter 2.4), Category 1. The English wording is the same as UN GHS Rev.11 in US OSHA, EU CLP and Canada. Canada’s official French text is “Tenir les soupapes et les accessoires exempts d'huile et de graisse” and Mexico’s Spanish text is “Mantener las válvulas y conexiones libres de grasa y aceite”. 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

Keep valves and fittings free from oil and grease.

UN GHS Rev.11, Annex 3, Table A3.2.2, PDF p. 318

US OSHA HCS

Same as UN

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

Keep valves and fittings free from oil and grease.

29 CFR 1910.1200 App. C, matched by wording

EU CLP

Same as UN

EU_CLP_2025 · consolidated 1 Jul 2026

Keep valves and fittings free from oil and grease.

EU CLP, Annex IV, Part 2

Canada (EN)

Same as UN

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

Keep valves and fittings free from oil and grease.

GHS Rev.7 Annex 3 Table A3.2

Canada (FR)

Adopted

WHMIS_2022 · SGH Rév.7, texte officiel

Tenir les soupapes et les accessoires exempts d'huile et de graisse.

GHS Rev.7 Annex 3 Table A3.2

Mexico (ES)

Adopted

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

Mantener las válvulas y conexiones libres de grasa y aceite

NOM-018-STPS-2015, DOF 9 October 2015, Apéndice D, Tabla D.1, PDF p. 35

Hazard classes and categories

Oxidizing gases (chapter 2.4) · 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.

H270

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

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 P244. 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.