NFPA 704 Hazard Diamond - Understanding Chemical Risk Symbols #131636 (License: Personal Use)

This NFPA 704 hazard identification system displays four colored sections: red (top) indicates flammability with a flame symbol, blue (left) shows health hazard with a “W” for water-reactive or corrosive substances, yellow (right) signals reactivity/instability with a radiation trefoil, and white (bottom) features a skull-and-crossbones for acute toxicity. Each quadrant may include numerical ratings (0-4) for severity, though this version uses symbolic representations for general hazard categories. It is standardized by the National Fire Protection Association for emergency response and workplace safety.

Used on chemical containers, storage cabinets, and facility entrances to alert firefighters, workers, and safety personnel to immediate hazards; supports OSHA and EPA compliance in labs, manufacturing, and hazardous material handling.