A placard with Red color and hazard class 3 indicates which hazard?

A placard with Red color and hazard class 3 indicates which hazard?

• A. Corrosive substances
• B. Toxic gases
• C. Reactive solids
• D. Flammable liquids

Answer: (D)

Red background with the flame symbol is used to mark flammable liquids, which are hazard class 3. This combination signals that the substance can ignite easily and requires precautions to prevent ignition sources, especially around vapors that can form flammable mixtures. Flammable liquids include fuels and many solvents, so the placard is meant to alert handlers and responders to fire risk and the need for proper ventilation, grounding, and smoke-free environments. Other hazards use different colors or symbols and belong to different classes, so they wouldn’t be indicated by a red placard with a flame. For example, corrosives, toxic gases, and reactive solids are identified by their own distinct class designs and colors, not by this red flame combination.

Red background with the flame symbol is used to mark flammable liquids, which are hazard class 3. This combination signals that the substance can ignite easily and requires precautions to prevent ignition sources, especially around vapors that can form flammable mixtures. Flammable liquids include fuels and many solvents, so the placard is meant to alert handlers and responders to fire risk and the need for proper ventilation, grounding, and smoke-free environments.

Other hazards use different colors or symbols and belong to different classes, so they wouldn’t be indicated by a red placard with a flame. For example, corrosives, toxic gases, and reactive solids are identified by their own distinct class designs and colors, not by this red flame combination.