P373 · Precautionary statementDO NOT fight fire when fire reaches explosives.
P373 is the GHS precautionary statement “DO NOT fight fire when fire reaches explosives”. UN GHS Annex 3 assigns it to 3 hazard classes. The English wording is the same as UN GHS Rev.11 in US OSHA, EU CLP and Canada. Canada’s official French text is “NE PAS combattre l'incendie lorsque le feu atteint les explosifs” and Mexico’s Spanish text is “No apagar el fuego cuando éste afecta a la carga”.
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 UNDO NOT fight fire when fire reaches explosives.
UN GHS Rev.11, Annex 3, Table A3.2.3, PDF p. 327
US OSHA HCS
Same as UNDO NOT fight fire when fire reaches explosives.
29 CFR 1910.1200 App. C, matched by wording
EU CLP
Same as UNDO NOT fight fire when fire reaches explosives.
EU CLP, Annex IV, Part 2
Canada (EN)
Same as UNDO NOT fight fire when fire reaches explosives.
GHS Rev.7 Annex 3 Table A3.2
Canada (FR)
AdoptedNE PAS combattre l'incendie lorsque le feu atteint les explosifs.
GHS Rev.7 Annex 3 Table A3.2
Mexico (ES)
AdoptedNo apagar el fuego cuando éste afecta a la carga
NOM-018-STPS-2015, DOF 9 October 2015, Apéndice D, Tabla D.1, PDF p. 37
Hazard classes and categories
- Explosives (chapter 2.1) · Category 1, 2A, 2B
- Self-reactive substances and mixtures (chapter 2.8) · Category Type A
- Organic peroxides (chapter 2.15) · Category Type A
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 P373. 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.