Designated Substances

In Ontario, the Ministry of Labour has designated twelve substances as requiring their own separate legislation. 

These substances are as follows:

  • Acrylonitrile – O.Reg. 835
  • Arsenic – O.Reg. 836
  • Asbestos – O.Reg. 837
  • Asbestos on Construction Projects – O.Reg. 838
  • Benzene – O.Reg. 839
  • Coke Oven Emissions – O.Reg. 840
  • Ethylene Oxide – O.Reg. 841
  • Isocyanates – O.Reg. 842
  • Lead – O.Reg. 843
  • Mercury – O.Reg. 844
  • Silica – O.Reg. 845
  • Vinyl Chloride – O.Reg. 846
Acid Tanks

Wondering if your premises have been exposed to designated substances?

Our company can provide designated substance assessments and exposure control programs.

Contact GTA Environmental for Occupational Health,
Safety & Environmental Services

Contact Info

Toll Free (Ontario): 1-877-260-0987

Email: mark@GTAenvironmental.com

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