P251 · Precautionary statementDo not pierce or burn, even after use.
P251 is the GHS precautionary statement “Do not pierce or burn, even after use”. UN GHS Annex 3 assigns it to Aerosols (chapter 2.3), Category 1, 2, 3. 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 perforer ni brûler, même après usage” and Mexico’s Spanish text is “No perforar ni quemar, incluso después de su uso”. In the UN GHS Rev.11 label matrix it is used with 3 hazard statements (UN only).
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 pierce or burn, even after use.
UN GHS Rev.11, Annex 3, Table A3.2.2, PDF p. 318
US OSHA HCS
Same as UNDo not pierce or burn, even after use.
29 CFR 1910.1200 App. C, matched by wording
EU CLP
Same as UNDo not pierce or burn, even after use.
EU CLP, Annex IV, Part 2
Canada (EN)
Same as UNDo not pierce or burn, even after use.
GHS Rev.7 Annex 3 Table A3.2
Canada (FR)
AdoptedNe pas perforer ni brûler, même après usage.
GHS Rev.7 Annex 3 Table A3.2
Mexico (ES)
AdoptedNo perforar ni quemar, incluso después de su uso
NOM-018-STPS-2015, DOF 9 October 2015, Apéndice D, Tabla D.1, PDF p. 35
Hazard classes and categories
- Aerosols (chapter 2.3) · Category 1, 2, 3
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 P251. 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.