What shape is the NFPA 704 placard?

The NFPA 704 placard is designed in the shape of a diamond. This specific shape helps to clearly convey vital safety information about hazardous materials. The diamond is divided into four quadrants, each colored differently to indicate different types of hazards: blue for health risks, red for flammability, yellow for reactivity, and white for specific hazards. The arrangement and distinct coloring allow first responders and others to quickly assess the dangers associated with a substance, facilitating prompt and informed reactions during emergencies. The diamond shape is universally recognized and plays a critical role in hazardous material identification and risk communication, making it an essential tool in safety and emergency response protocols.