NFPA 704 Hazard Diamond: Understanding the 4-2-2 Corrosive Oxidizer Rating #131653 (License: Personal Use)

The NFPA 704 diamond displays a red quadrant with "4" (severe health hazard), blue with "2" (temporary incapacitation or possible residual injury), yellow with "2" (violent chemical change possible at elevated temperatures/pressures), and white with "COR OX" denoting both corrosive and oxidizing properties. This standardized system helps emergency responders quickly assess risks during incidents involving hazardous materials.

Used on chemical containers, storage areas, and transport vehicles to communicate hazards to firefighters, hazmat teams, and safety personnel; matches user intent for identifying, interpreting, or complying with safety labeling standards.