What color placard represents a poisonous gas in Class 2 hazardous materials?

In the context of hazardous materials, particularly Class 2 which deals with gases, the correct color placard for representing a poisonous gas is white. This designation is crucial for safety during transportation and emergency responses, as the color coding system allows first responders and handlers to quickly identify the type of hazard they are dealing with.

The white placard is specifically used to indicate gases that can cause harm if inhaled or if they come into contact with skin, distinguishing them from other types of gases or materials. Understanding these color codes is vital for ensuring proper handling and safety precautions are taken in dealing with hazardous materials.

This classification also helps prevent incidents where first responders might misidentify the nature of the hazard, thereby mitigating risks in emergency situations. Proper training and recognition of these placards can save lives and contribute to a more effective emergency response.