WHMIS 2015 has 5 major hazard groupings:

WHMIS 2015 actually categorizes hazards into six major groupings, not five. These groupings are designed to classify and communicate the hazards associated with hazardous materials in the workplace, ensuring that workers can recognize and understand the risks involved. The six major groupings are:

1. Health Hazards - includes substances that can cause serious health effects.

2. Physical Hazards - refers to materials that can pose a physical risk, such as flammables or explosives.

3. Environmental Hazards - covers substances that may have harmful effects on the environment.

4. Corrosive to Metals - specifically identifies substances that can corrode metals.

5. Skin Corrosion/Irritation - concerns chemicals that can cause skin damage.

6. Eye Damage/Irritation - relates to substances that can harm eyes.

By understanding these groupings, workers are better equipped to handle, store, and dispose of hazardous materials safely, aligning with WHMIS regulations.