GHS REFERENCE / P-CODES / P285

P285 — In case of inadequate ventilation wear respiratory protection

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

At a glance

Official statementIn case of inadequate ventilation wear respiratory protection.
GroupPrevention (P2xx)

Later GHS revisions folded this statement into P284 — both wordings still appear on sheets in circulation, so we list both.

Which hazards call for P285

Our engine assigns P285 whenever a product carries any of these hazard statements:

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
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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