The catch-all for significant but lower-severity health hazards: harmful if swallowed/inhaled/on skin (acute category 4), skin and eye irritation, skin allergy, airway irritation, or drowsiness and dizziness.
This is the official UN GHS artwork — public domain, free to reuse in training decks, wall posters, workplace signs, and labels.
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On a printed label the symbol must sit in the red diamond frame, point-up, as shown — the frame is part of the pictogram.
Precedence rules. The exclamation mark is the polite one — it steps aside when a stronger symbol covers the same ground:
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.