Response · precautionary statement
P378 — Use appropriate media to extinguish.
Response statements describe what to do once exposure, a spill or a fire has happened. No substance with a harmonised EU classification carries this code.
01 · Wording
What P378 says
Use … to extinguish. The wording is incomplete on purpose. The extinguishing medium suitable for this substance — the supplier names it.
Use appropriate media to extinguish. How it usually reads on a label. We show it separately rather than presenting a filled-in blank as the regulation's own text.
Response · GHS revision 9
Reading the official wording. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies. · A slash offers a choice, as in POISON CENTER/doctor.
02 · Legal status
Where P378 is current
GHS is a United Nations model text, revised every two years, and each jurisdiction adopts a revision on its own timetable. A code can be legally current in one system and deleted in another — that is normal, not an error.
| Jurisdiction | Basis | Status of P378 |
|---|---|---|
| EU CLP | Regulation (EC) 1272/2008 CLP Annex IV, Part 2 (consolidated) | Current |
| US OSHA HazCom | 29 CFR 1910.1200 Appendix C UN GHS Rev.7 (final rule of 20 May 2024) | Current |
| US HazCom 2012 | legacy · GHS Rev.3 UN GHS Rev.3, Annex 3 | Current |
| UN GHS | Rev.11 (2025) UN GHS Rev.11, Annex 3 | Current |
Currently in force under: EU CLP, US OSHA HazCom, US HazCom 2012, UN GHS. Sources: EU CLP · US OSHA HazCom · US HazCom 2012 · UN GHS
03 · On a label
P378 usually appears combined
CLP Annex IV defines combined statements as single label elements. P378 is a component of one of them — this is how you will actually see it printed.
| Code | Combined statement |
|---|---|
| P370+P378 | In case of fire: use appropriate media to extinguish. CLP verbatim: In case of fire: Use … to extinguish. |
04 · Substances
Substances carrying P378
No substance with a harmonised classification in CLP Annex VI carries this code. That does not mean it is unused — suppliers apply it to their own mixtures.
All precautionary statements
The full list of P-codes with the jurisdiction switch lives on the precautionary statements hub. For the hazard side, see hazard statements (H-codes).
Wording quoted from the regulation named above. Substance counts come from harmonised classifications in CLP Annex VI — the statements on a real product also depend on the supplier's own classification. Always check the supplier safety data sheet.