What does the WHMIS symbol represent in relation to Class D materials?

• A. Corrosive chemicals
• B. Flammable materials
• C. Poisonous and infectious materials
• D. Oxidizing agents

Answer: (C)

The WHMIS (Workplace Hazardous Materials Information System) symbol associated with Class D materials specifically identifies "Poisonous and Infectious Materials." This classification is focused on substances that can cause immediate or long-term health effects upon exposure, including toxic responses and infectious diseases.

Class D encompasses two divisions: one for materials that are toxic (Division 1) and can lead to adverse health effects, and another for biohazardous materials (Division 2), which can carry infectious agents that pose a risk to human health. The symbol typically features a skull and crossbones for toxic materials, indicating a warning about the potential dangers these substances present in the workplace. Understanding this symbol is vital for safety practices, as it emphasizes the need for proper handling, storage, and use of these materials to prevent health hazards.