Which color on a Hazmat diamond indicates a reactivity hazard?

Which color on a Hazmat diamond indicates a reactivity hazard?

• A. Blue
• B. Yellow
• C. Red
• D. White

Answer: (B)

Yellow indicates a reactivity hazard on the Hazmat diamond. In the NFPA 704 labeling system, each quadrant communicates a different risk: blue for health, red for flammability, yellow for reactivity, and white for special hazards. The reactivity section signals how likely a material is to undergo chemical change under factors like heat, shock, or contact with water or other substances. A higher yellow value means greater potential for unstable or violent reactions. So the yellow color is the one that denotes reactivity risk.

Yellow indicates a reactivity hazard on the Hazmat diamond. In the NFPA 704 labeling system, each quadrant communicates a different risk: blue for health, red for flammability, yellow for reactivity, and white for special hazards. The reactivity section signals how likely a material is to undergo chemical change under factors like heat, shock, or contact with water or other substances. A higher yellow value means greater potential for unstable or violent reactions. So the yellow color is the one that denotes reactivity risk.