GHS REFERENCE / P-CODES / P311

P311 — Call a POISON CENTER or doctor

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

At a glance

Official statementCall a POISON CENTER or doctor.
GroupResponse (P3xx)

Which hazards call for P311

Our engine assigns P311 whenever a product carries any of these hazard statements:

H331Toxic if inhaled.
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H370Causes damage to organs.
H371May cause damage to organs.
Reference information, not legal or professional advice. Statement texts and allocations follow GHS Rev 9 / 29 CFR 1910.1200 Appendix C 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 or a container label, it assigns the hazard statements, signal word, pictograms, and precautionary statements from these same tables — automatically, with the calculation shown.

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