Workplace Hazardous Materials Information System

Classes of WHMIS Controlled Products


CLASS A - Compressed Gas

CLASS A - Compressed Gas

CLASS B - Flammable and Combustible Material

  • Division 1: Flammable Gases
  • Division 2: Flammable Liquids
  • Division 3: Combustible Liquids
  • Division 4: Flammable Solids
  • Division 5: Flammable Aerosols
  • Division 6: Reactive Flammable Materials
CLASS B - Flammable and Combustible Material

CLASS C - Oxidizing Material

CLASS C - Oxidizing Material

CLASS D - Poisonous and Infectious Material

  • Division 1: Materials Causing Immediate and Serious Toxic Effects
    • Subdivision A: Very Toxic Material
    • Subdivision B: Toxic Material
Division 1: Materials Causing Immediate and Serious Toxic Effects
  • Division 2: Materials Causing Other Toxic Effects
    • Subdivision A: Very Toxic Material
    • Subdivision B: Toxic Material
Division 2: Materials Causing Other Toxic Effects
  • Division 3: Biohazardous Infectious Material
Division 3: Biohazardous Infectious Material

CLASS E - Corrosive Material

CLASS E - Corrosive Material

CLASS F - Dangerously Reactive Material

CLASS F - Dangerously Reactive Material
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