H250 · Hazard statementCatches fire spontaneously if exposed to air

Hazard statementPhysical

H250 is the GHS hazard statement “Catches fire spontaneously if exposed to air”. It is used for Pyrophoric liquids (chapter 2.9), Category 1 and Pyrophoric solids (chapter 2.10), 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 “S’enflamme spontanément au contact de l’air” and Mexico’s Spanish text is “Se inflama espontáneamente en contacto con el aire”. The UN GHS Rev.11 label matrix lists 8 precautionary statements for it (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

Catches fire spontaneously if exposed to air

UN GHS Rev.11, Annex 3, Table A3.1.1, PDF p. 303

US OSHA HCS

Same as UN

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

Catches fire spontaneously if exposed to air

29 CFR 1910.1200 App. C, matched by wording

EU CLP

Same as UN

EU_CLP_2025 · consolidated 1 Jul 2026

Catches fire spontaneously if exposed to air.

EU CLP (Reg. (EC) No 1272/2008), Annex III, Part 1

Canada (EN)

Same as UN

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

Catches fire spontaneously if exposed to air

GHS Rev.7 Annex 3 Table A3.1

Canada (FR)

Adopted

WHMIS_2022 · SGH Rév.7, texte officiel

S’enflamme spontanément au contact de l’air

GHS Rev.7 Annex 3 Table A3.1

Mexico (ES)

Adopted

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

Se inflama espontáneamente en contacto con el aire

Líquidos pirofóricos, y Sólidos pirofóricos · 1

NOM-018-STPS-2015, DOF 9 October 2015, Apéndice C, Tabla C.1, PDF p. 30

Hazard classes and categories

Pyrophoric liquids (chapter 2.9) · Category 1
Pyrophoric solids (chapter 2.10) · Category 1

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

FRLiquides pyrophoriques (chapitre 2.9) ; Matières solides pyrophoriques (chapitre 2.10) · catégorie 1

ESLíquidos pirofóricos, y Sólidos pirofóricos · 1 (NOM-018-STPS-2015)

Pictogram: Flame (GHS02)

UN GHS Rev.11 Annex 3, section 3. Pictogram rules can differ by jurisdiction; see the GHS pictogram guide.

P statements 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 different P statements; check the regulation for your market.

Pyrophoric liquids (chapter 2.9), categories 1 (PDF p. 361)
P210 P222 P231 P233 P280 P302+P334 P370+P378
Pyrophoric solids (chapter 2.10), categories 1 (PDF p. 362)
P210 P222 P231 P233 P280 P302+P335+P334 P370+P378

UN GHS Rev.11 Annex 3, section 3. Each table covers the categories named; a P statement may apply to only some of them. Many apply only under conditions; check the conditions for use before putting them on a label.

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 H250. 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.