As the name implies, dangerous goods must be managed with extreme caution since they have the potential to cause serious environmental disasters.  Consequently, in order to ensure better control over these residual materials that are considered hazardous, the Government of Canada regulates their transportation on Canadian territory. 

Under the Transportation of Dangerous Goods Regulations (TDG), shippers, carriers and handlers must comply with very strict requirements when preparing or transporting residual hazardous materials, including identifying them according to their class.

In this article, find out how dangerous goods are classified in Canada.

The 9 dangerous goods classes under TDG Regulations

TDG divides hazardous materials into nine classes according to the type of hazard they cause. These classes also apply to wastes and recyclable materials that are potentially hazardous.

Class 1: Explosives

Since explosives are clearly very dangerous goods, their transportation is governed by legislation other than the TDG: the Explosives Act and Regulations. 

Class 2: Gases

The gases class has 3 divisions: flammable gases, non-flammable non-toxic gases and toxic or corrosive gases.

Class 3: Flammable liquids

This class includes liquids, mixtures of liquids, or liquids containing solids in solution or suspension which emit flammable vapours at a temperature of 60.5 °C or less in a closed crucible or 65.6 °C or less in an open crucible.

Paints, varnishes and lacquers are prime examples of dangerous goods belonging to this class.

Class 4: Flammable solids; substances liable to spontaneous combustion; substances which, on contact with water, emit flammable gases

This class includes solid wastes that can easily ignite or cause fire under friction, and therefore during transport. 

Some of the residual substances belonging to this Class may even heat up spontaneously on contact with air or emit flammable gases in dangerous quantities on contact with water (water-reactive substances).

Class 5: Oxidizing substances and organic peroxides

Oxygen is released from oxidizing residual matter. As a result, they can cause or contribute to the combustion of other materials. 

Organic peroxides, on the other hand, are susceptible to explosive decomposition, can react dangerously with other materials and can cause eye damage.

Class 6: Toxic and infectious substances

Toxic wastes can cause death or serious injury when ingested, inhaled or on contact with skin.

The term "infectious substances" refers to substances containing micro-organisms or their toxins that can cause disease in animals or humans.

Class 7: Radioactive material

As with the transport of explosives, the transport of radioactive material is subject to even stricter regulations than those under the TDG Regulations. 

Radioactive materials are regulated by the Canadian Nuclear Safety Commission. 

Class 8: Corrosive substances

Corrosive residual materials can cause significant damage to the living tissue they come into contact with. During transportation or handling, they can also seriously damage or even destroy other goods or equipment.

Class 9: Miscellaneous dangerous substances and articles

Wastes that are considered hazardous but fail to meet the criteria for inclusion in the other classes are identified as being part of this class of dangerous goods.

Trust EBI Enviro Urgence with the management of your dangerous goods

Now you know that a wide variety of residual materials can be considered hazardous. Since they all involve different risks, they must be classified and managed accordingly. Special accreditations are also required, especially when transporting them.

If you want to rest assured that your hazardous waste will be handled with care and no longer endanger the environment and the population, entrust their transportation and disposal to EBI Enviro Urgence.