P371 · Precautionary statementIn case of major fire and large quantities:
P371 is the GHS precautionary statement “In case of major fire and large quantities:”. UN GHS Annex 3 assigns it to 3 hazard classes. The English wording is the same as UN GHS Rev.11 in EU CLP and Canada. OSHA uses it only inside combined statements. Canada’s official French text is “En cas d'incendie important et s'il s'agit de grandes quantités:” and Mexico’s Spanish text is “En caso de un incendio de grandes proporciones”.
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 UNIn case of major fire and large quantities:
UN GHS Rev.11, Annex 3, Table A3.2.3, PDF p. 327
US OSHA HCS
In combined statementsUsed in OSHA App. C only inside combined statements: P371+P380+P375. Precautionary statements may be combined (App. C, C.2.4.6).
EU CLP
Same as UNIn case of major fire and large quantities:
EU CLP, Annex IV, Part 2
Canada (EN)
Same as UNIn case of major fire and large quantities:
GHS Rev.7 Annex 3 Table A3.2
Canada (FR)
AdoptedEn cas d'incendie important et s'il s'agit de grandes quantités:
GHS Rev.7 Annex 3 Table A3.2
Mexico (ES)
AdoptedEn caso de un incendio de grandes proporciones
NOM-018-STPS-2015, DOF 9 October 2015, Apéndice D, Tabla D.1, PDF p. 36
Hazard classes and categories
- Oxidizing liquids (chapter 2.13) · Category 1
- Oxidizing solids (chapter 2.14) · Category 1
- Desensitized explosives (chapter 2.17) · Category 4
UN GHS Rev.11 Annex 3, sections 1 and 2
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 P371. 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.