SCCJA Basic Law Enforcement (BLE) Pre-Academy Practice Test

The white area on the NFPA 704 placard is used for Special Considerations. While the blue, red, and yellow sections show health, flammability, and reactivity hazards with numeric scales, the white section carries letters or symbols that flag special hazards or handling notes that don’t fit into those three categories. This can include indications like oxidizers, water-reactive materials, radioactive materials, or other unique cautions that affect how the substance must be stored, handled, or avoided with other materials. PPE needs are not specified by this white area; they’re determined more broadly from the overall hazard context. So the white diamond communicates Special Considerations.