Which statement about the color coding on the hazardous materials diamond is true?

Which statement about the color coding on the hazardous materials diamond is true?

• A. Left blue indicates health hazard
• B. Right yellow indicates health hazard
• C. Top red indicates health hazard
• D. Bottom white indicates health hazard

Answer: (A)

In the hazardous materials diamond (NFPA 704), the blue section on the left represents health hazard. The numbers inside each colored section (0–4) indicate the degree of hazard to health, with higher numbers signaling greater risk. The other colors map to different hazards: red on the top is flammability, yellow on the right is instability/reactivity, and the white bottom area denotes special hazards (such as oxidizers or materials that are water reactive). So, saying that the left blue area indicates health hazard is the true statement.

In the hazardous materials diamond (NFPA 704), the blue section on the left represents health hazard. The numbers inside each colored section (0–4) indicate the degree of hazard to health, with higher numbers signaling greater risk. The other colors map to different hazards: red on the top is flammability, yellow on the right is instability/reactivity, and the white bottom area denotes special hazards (such as oxidizers or materials that are water reactive). So, saying that the left blue area indicates health hazard is the true statement.