Which pictogram signifies that the material may be an irritant?

• A. Exclamation mark
• B. Skull and crossbones
• C. Environment
• D. Health hazard

Answer: (A)

Understanding hazard pictograms helps you read labels quickly. The pictogram with the exclamation mark signals that a substance may be an irritant or pose moderate hazards, such as skin or eye irritation or harmful effects if swallowed or inhaled. This makes it the best indicator for irritant potential. In contrast, skull and crossbones warn about acute toxicity, the environment symbol flags environmental hazards, and the health hazard symbol points to serious long-term health effects. So the exclamation mark is the symbol that signifies an irritant.