In NFPA 704 placards, the white section indicates which hazard?

• A. Special hazard
• B. Flammability
• C. Health
• D. Electrical

Answer: (A)

The white section on an NFPA 704 placard is for special hazards. While the blue, red, and yellow sections convey health, flammability, and reactivity, the white area flags hazards that don’t fit those categories. When used, it may show symbols or letters such as OX for oxidizers or a W with a line through it to indicate water reactivity; it can also indicate other special conditions like radioactivity or corrosivity depending on the material. This is why the white area is the place to look for those extra warning signals that aren’t covered by the color-coded sections. Electrical isn’t a standard label in the NFPA 704 system.