Designated Substances


Designated substances are materials that, due to risks associated with exposure, handling, or storage, are strictly regulated by the Ministry of Labour (MOL).

View section 5. Hazardous Materials in the Risk Management Manuel, and specifically section 500 for more information on the Designated Substances Control Program.

Research groups working with designated substances are legally bound to complete a safety assessment outlining compliance with applicable MOL regulations.

The materials that have been rated as designated substances are:

  • acrylonitrile
  • arsenic
  • asbestos
  • benzene
  • coke oven emissions
  • ethylene oxide
  • isocyanates
  • lead
  • mercury
  • silica
  • vinyl chloride

To download a Designated Substance Assessment Form, visit our Forms and Templates page, or click the Risk Management Manuel.

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