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P403 — Store in a well-ventilated place

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

AT A GLANCE · OFFICIAL STATEMENT
“Store in a well-ventilated place.”
GROUP
Storage (P4xx)
ANNEX 3 ROLE
Store the product safely
ASSIGNED BY THE ENGINE
Automatically — whenever a product carries any of the hazard statements below

Which hazards call for P403

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.