When a material is listed as a hazardous product, the manufacturer must treat the product according to WHMIS regulations. Part of this regulation is to classify it according to a hazard class.
WHMIS 2015 has many hazard classes. The class describes the different types of hazards. For example, Flammable Solids is a hazard class. Each hazard class is further split into categories or subcategories (Types A, B, C, D, E and F). For example, Category 1 is always more hazardous than Category 2 or 3.
The hazard class and category are a guide to the:
Gasoline is a Flammable Liquid – Category 2, can easily catch fire, and as a precaution you should keep away from heat, hot surfaces, sparks, etc.
Note: Some products present more than one hazard and can belong to more than one hazard class.
What hazards are in your work area?