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P371 — In case of major fire and large quantities:

A response statement from GHS Annex 3 — the precautionary half of the label language on SDSs and containers.

AT A GLANCE · OFFICIAL STATEMENT
“In case of major fire and large quantities:”
GROUP
Response (P3xx)
ANNEX 3 ROLE
First aid, fire, spills — when it happens anyway
ASSIGNED BY THE ENGINE
Automatically — whenever a product carries any of the hazard statements below

The trailing colon is not a typo: P371 is a condition stem. On sheets and labels it prints combined with the response steps that follow it — for example "P303+P361+P353" reads as one instruction.

Which hazards call for P371

Our engine assigns P371 whenever a product carries any of these hazard statements:

Reference information, not legal or professional advice. Statement texts and allocations follow 29 CFR 1910.1200 Appendix C (the GHS as adopted by OSHA HazCom 2024) as implemented by our classification engine; the regulatory text and agency practice control. Claims last reviewed July 23, 2026.

The engine writes these for you.

When SDS HQ authors an SDS, it assigns the hazard statements, signal word, pictograms, and precautionary statements from these same tables — automatically, with the calculation shown.