NFPA 704 Hazard Diamond Explained | Safety Signage Guide #2218555 (License: Personal Use)

This NFPA 704 hazard identification sign uses a color-coded diamond divided into four quadrants: blue for health hazard (1 = slight hazard), red for flammability (3 = extreme fire risk), yellow for instability/reactivity (0 = stable), and white for special hazards (blank = none). The black numerals indicate severity levels from 0 (minimal) to 4 (severe), helping first responders and workers quickly assess chemical risks. The sign is designed for placement on containers, storage areas, and facility entrances.

Used in industrial, laboratory, and chemical storage settings to communicate immediate hazard information to emergency personnel and staff; matches user intent for safety training, regulatory compliance (OSHA), or hazard identification reference.