Each chemical must be evaluated to determine where and how it should be stored according to the 6 WHMIS hazard classes. Manufacturers’ recommendations, found in the MSDS’s for each product, should be followed.

As a general rule, flammable or combustible liquids, toxic chemicals, explosive chemicals, oxidizing agents, corrosive chemicals, water-sensitive chemicals, and compressed gases should be segregated from each other. They must be stored so that they will not mix with each other if a container leaks or breaks.

Certain chemical classes, such as flammables and corrosives, should have their own specialized storage cabinets. Features to look for are: self-closing doors, adjustable shelving, construction materials compatible with all hazards present, and CSA/UL certification. Some cabinets are designed for dual-storage (e.g.: Flammables + Corrosives); contact the manufacturer (e.g.: Fisher Scientific) directly for options.

For more information:

• Chemical Storage and Segregation