What does the white section in the NFPA 704 diamond indicate?

What does the white section in the NFPA 704 diamond indicate?

• A. Special hazards
• B. Flammability
• C. Health
• D. Instability

Answer: (A)

The white section on the NFPA 704 diamond signals special hazards. It isn’t a numeric rating like the blue (health), red (flammability), or yellow (reactivity) sections; instead it flags additional hazards that require extra precautions. You might see letters or symbols such as OX for oxidizers, or a W with a line through it for water-reactive materials, along with other notes indicating corrosive, radioactive, or other special conditions. When something appears there, responders should consult the material's safety data and follow the specific handling instructions for those hazards. If nothing is shown in white, there are no listed special hazards.

The white section on the NFPA 704 diamond signals special hazards. It isn’t a numeric rating like the blue (health), red (flammability), or yellow (reactivity) sections; instead it flags additional hazards that require extra precautions. You might see letters or symbols such as OX for oxidizers, or a W with a line through it for water-reactive materials, along with other notes indicating corrosive, radioactive, or other special conditions. When something appears there, responders should consult the material's safety data and follow the specific handling instructions for those hazards. If nothing is shown in white, there are no listed special hazards.