What color is used to identify CO2 fire extinguishers?

The color used to identify CO2 fire extinguishers is black. This color coding is part of an internationally recognized system to help personnel quickly identify the type of fire extinguisher suitable for various fire scenarios. CO2 extinguishers are specifically designed for fires involving electrical equipment and flammable liquids, making it critical for users to recognize these extinguishers easily. The black color signifies that the extinguisher contains carbon dioxide, which works by displacing oxygen and smothering the fire, thereby preventing re-ignition once the fire is out. Understanding this color coding is essential for effective firefighting strategies and ensuring safety in emergency situations.