Canadian Centre for Occupational Health and Safety
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Health and Safety: Teaching Tools
A C T I V I T I E S

Hazard Symbols Quiz Answers

Symbol A Symbol B Symbol C Symbol D1 Symbol D2 Symbol D3 Symbol E Symbol F
A B C D1 D2 D3 E F
Symbol Definition Hazard Example

Symbol C
C

Oxidizing Material
Cause or speed up a fire or explosion.
Cause materials to burn rapidly that do not normally burn readily.
Cause combustible materials (like rags) to burn, even without an ignition source like a spark or flame.
Ozone,
Hydrogen peroxide,
Calcium hypochlorite

Symbol E
E

Corrosive Material
Can burn or destroy human tissue (e.g. skin and eyes) immediately on contact.
Can cause permanent scarring, blindness, lung injury, or death with severe exposures.
Can attack (corrode) some metals weakening them
Acids (e.g. sulfuric acid),
Bases (e.g. sodium
hydroxide),
Chlorine,
Sodium hypochlorite

Symbol D2
D2

Poisonous & Infectious Material - Division 2
Cancer
Birth defects in your children
Asthma
Reproductive effects
Long-term health effects, like liver damage, from a relatively low exposure
Skin irritation
Eye irritation
Allergic skin reactions
Long-term health effects, like liver damage, from a relatively high exposure
Acetone (eye irritant),
Asbestos (cancer),
Carbon tetrachloride (liver damage),
Latex (skin sensitizer),
Lead (birth defects and reproductive effects),

Symbol F
F

Dangerously Reactive Material
Serious health effects and death - these materials can react very strongly and quickly with water to release a very toxic gas.
Fire or explosion – can react
dangerously under certain
circumstances (e.g. bumped or dropped; temperature increases; pressure increases)
Benzoyl peroxide
Ethyl acrylate,
Vinyl chloride,

Symbol D3
D3
Poisonous & Infectious Material - Division 3 These materials may cause serious illness, disease and/or death. Hepatitis, HIV,
cold virus, E. coli

Symbol B
B

Flammable and Combustible Material

Fire or explosion – caused by the combination of fuel, air, and an ignition source
Aerosol products,
Acetone,
Acetylene, Diesel fuel, Formaldehyde
solutions,
Gasoline,
Hydrogen,
Kerosene,
Lithium,
Naphthalene,
Propane, Silicon,
Toluene, Zinc
powder

Symbol A
A

Compressed Gas
Explosion
Suffocation
Frostbite
Acetylene, Carbon
dioxide, Helium,
Propane

Symbol D1
D1
Poisonous & Infectious Material - Division 1 Can cause serious health effects and death following a single dose or brief exposure. Ammonia,
Carbon monoxide,
Chlorine,
Sodium cyanide


Notes

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